docs(github): update GH templates for EOL

- update bug, docs, and PR templates for EOL
- update CONTRIBUTING.md for EOL
- remove links to AngularJS Material forums and Gitter channel
  from GH contact links as they are no longer supported

.github/CONTRIBUTING.md

@@ -10,10 +10,13 @@
  - [Developer Commits Levels](#pr_forks)
  - [Submission Guidelines](#submit)
 
-## AngularJS Material is in LTS mode
+## AngularJS Material has reached end-of-life
 
-We are no longer accepting changes that are not critical bug fixes into this project.
-See [Long Term Support](https://material.angularjs.org/latest/#long-term-support) for more detail.
+We are no longer accepting changes into this project as
+**AngularJS Material support has officially ended as of January 2022.**
+[See what ending support means](https://docs.angularjs.org/misc/version-support-status)
+and [read the end of life announcement](https://goo.gle/angularjs-end-of-life). Visit
+[material.angular.io](https://material.angular.io) for the actively supported Angular Material.
 
 ## <a name="coc"></a> Code of Conduct
 

.github/ISSUE_TEMPLATE/bug.md

@@ -3,13 +3,7 @@ name: Bug Report
 about: Report a bug in AngularJS Material
 labels: "type: bug, needs triage"
 ---
-<!-- 
-Filling out this template is required! Do not delete it when submitting your issue!
-Without this information, your issue may be auto-closed. 
-
-Please submit AngularJS Material questions to the
-[AngularJS Material Forum](https://groups.google.com/forum/#!forum/ngmaterial)
-instead of submitting an issue.
+<!--
 
 ---------------------------------------------------------------------
 This repo is for AngularJS Material, not Angular Material or the CDK.
@@ -19,56 +13,10 @@ Please submit Angular Material and CDK questions
 [here](https://groups.google.com/forum/#!forum/angular-material2)
 and issues [here](https://github.com/angular/components/issues).
 -->
-# AngularJS Material is in LTS mode
-
-We are no longer accepting changes that are not critical bug fixes into this project.
-See [Long Term Support](https://material.angularjs.org/latest/#long-term-support) for more detail.
-
-
-## Bug Report
-
-<!-- Please note that we are not accepting major feature requests, i.e. requests for new components, at this time. -->
-
-## Demo and steps to reproduce the issue
-[This blank StackBlitz demo](https://stackblitz.com/edit/angularjs-material-blank?file=app%2Fapp.template.html) can be used to create a reproduction that demonstrates your issue.
-
-**Demo URL (required)***:  
-
-#### Detailed Reproduction Steps
-1. 
-1. 
-
-### Explain the expected behavior
-
-
-### Explain the current behavior
-
+## AngularJS Material has reached end-of-life
 
-### Discuss the use-case or motivation for changing the existing behavior
-
-
-### List the affected versions of AngularJS, Material, OS, and browsers
-<!-- Please note that only issues related to AngularJS 1.x and AngularJS Material 1.x should be submitted here.
-Please submit Angular Material and CDK questions [here](https://groups.google.com/forum/#!forum/angular-material2)
-and issues [here](https://github.com/angular/components/issues).
--->
-- AngularJS: 1.
-- AngularJS Material: 1.
-- OS: 
-- Browsers: 
-- Screen Readers: 
-
-### Add anything else we should know
-
-
-#### Stack Trace
-```
-
-```
-
-#### Screenshots
-
-
-<!-- Please double check that you have provided the required reproduction steps
-     and a Demo via StackBlitz, CodePen, Plunker, or GitHub repo.
--->
+We are no longer accepting changes into this project as
+**AngularJS Material support has officially ended as of January 2022.**
+[See what ending support means](https://docs.angularjs.org/misc/version-support-status)
+and [read the end of life announcement](https://goo.gle/angularjs-end-of-life). Visit
+[material.angular.io](https://material.angular.io) for the actively supported Angular Material.

.github/ISSUE_TEMPLATE/config.yml

@@ -3,9 +3,3 @@ contact_links:
   - name: AngularJS Material on StackOverflow
     url: https://stackoverflow.com/unanswered/tagged/angularjs-material
     about: Please ask and answer questions about your app or usage here.
-  - name: AngularJS Material Gitter
-    url: https://gitter.im/angular/material
-    about: Please contribute to the community discussion about AngularJS Material usage here.
-  - name: AngularJS Material Forum
-    url: https://groups.google.com/forum/?pli=1#!forum/ngmaterial
-    about: Please ask questions about the library, roadmap, and releases here.

.github/ISSUE_TEMPLATE/docs.md

@@ -3,21 +3,20 @@ name: Documentation
 about: Suggest an improvement to our documentation at material.angularjs.org
 labels: "type: docs, needs triage"
 ---
-# AngularJS Material is in LTS mode
+<!--
 
-We are no longer accepting changes that are not critical bug fixes into this project.
-See [Long Term Support](https://material.angularjs.org/latest/#long-term-support) for more detail.
+-------------------------------------------------------------------------
+This repo is for AngularJS Material, not Angular Material or Angular CDK.
+-------------------------------------------------------------------------
 
-## Documentation Feedback
-
-<!-- 
-Provide a brief summary of what you would like to see changed in our 
-documentation at material.angular.io.
-
-Feel free to provide any suggestions of content or examples you’d like us to include.
+Please submit Angular Material and Angular CDK questions
+[here](https://groups.google.com/forum/#!forum/angular-material2)
+and issues [here](https://github.com/angular/components/issues).
 -->
+# AngularJS Material has reached end-of-life
 
-**Affected documentation page URL:** 
-<!-- 
-Provide a link to the affected page on material.angularjs.org
--->
+We are no longer accepting changes into this project as
+**AngularJS Material support has officially ended as of January 2022.**
+[See what ending support means](https://docs.angularjs.org/misc/version-support-status)
+and [read the end of life announcement](https://goo.gle/angularjs-end-of-life). Visit
+[material.angular.io](https://material.angular.io) for the actively supported Angular Material.

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,51 +1,7 @@
-<!-- 
-Filling out this template is required! Do not delete it when submitting a Pull Request!
-Without this information, your Pull Request may be auto-closed.
--->
-# AngularJS Material is in LTS mode
+# AngularJS Material has reached end-of-life
 
-We are no longer accepting changes that are not critical bug fixes into this project.
-See [Long Term Support](https://material.angularjs.org/latest/#long-term-support) for more detail.
-
-## PR Checklist
-
-Please check your PR fulfills the following requirements:
-- [ ] Does this PR fix a regression since 1.2.0, a security flaw, or a problem caused by a new browser version?
-- [ ] The commit message follows [our guidelines](https://github.com/angular/material/blob/master/.github/CONTRIBUTING.md#-commit-message-format)
-- [ ] Tests for the changes have been added or this is not a bug fix / enhancement
-- [ ] Docs have been added, updated, or were not required
-
-## PR Type
-
-What kind of change does this PR introduce?
-<!-- Please check the one that applies to this PR using "x". -->
-```
-[ ] Bugfix
-[ ] Enhancement
-[ ] Documentation content changes
-[ ] Code style update (formatting, local variables)
-[ ] Refactoring (no functional changes, no api changes)
-[ ] Build related changes
-[ ] CI related changes
-[ ] Infrastructure changes
-[ ] Other... Please describe:
-```
-
-## What is the current behavior?
-<!-- Please describe the current behavior that you are modifying and link to one or more relevant issues. -->
-
-
-Fixes #
-
-## What is the new behavior?
-
-
-## Does this PR introduce a breaking change?
-```
-[ ] Yes
-[ ] No
-```
-<!-- If this PR contains a breaking change, please describe the impact and migration path for existing applications below. -->
-<!-- Note that breaking changes are highly unlikely to get merged to master unless the validation is clear and the use case is critical. -->
-
-## Other information
+We are no longer accepting changes into this project as
+**AngularJS Material support has officially ended as of January 2022.**
+[See what ending support means](https://docs.angularjs.org/misc/version-support-status)
+and [read the end of life announcement](https://goo.gle/angularjs-end-of-life). Visit
+[material.angular.io](https://material.angular.io) for the actively supported Angular Material.