Add Github issue forms and densify some templates

.github/ISSUE_TEMPLATE/BUG-REPORT.yml

@@ -0,0 +1,88 @@
+name: Bug report
+description: Report a bug in pylint
+labels: [bug, needs triage]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please make sure that this issue wasn't already requested, or already implemented in the main branch.
+  - type: textarea
+    id: what-happened
+    attributes:
+      label: What is the bug about ?
+      description:
+        Please provide the code you linted, and configurations files and multiple named
+        file if required
+      value: |
+        Given a file `a.py`:
+
+        ```python
+        # Please disable message unrelated to the bug
+        # pylint: disable=missing-docstring,
+        <a> = b + 1
+        ```
+
+        Using the following configuration pylintrc:
+        ```ini
+        # Please remove configuration unrelated to the bug
+
+        [MESSAGES CONTROL]
+        enable=use-symbolic-message-instead,
+        ```
+    validations:
+      required: true
+  - type: textarea
+    id: current-behavior
+    attributes:
+      label: What is the command used and its actual output ?
+      description: Please provide the command used and the current output
+      value: |
+        Result of `pylint a.py`:
+        ```
+        ************* Module a
+        a.py:3:1: E0001: invalid syntax (<unknown>, line 1) (syntax-error)
+        ```
+    validations:
+      required: true
+  - type: textarea
+    id: future-behavior
+    attributes:
+      label: What would you expect instead ?
+      description:
+        Tell us what you expect instead, for example expected output or behavior
+    validations:
+      required: false
+  - type: textarea
+    id: python-interpreter
+    attributes:
+      label: "Output of 'pylint --version'"
+      description: Please copy and paste the result
+      placeholder: |
+        pylint 2.9.6
+        astroid 2.6.5
+        Python 3.8.10 (default, Jun  2 2021, 10:49:15)
+        [GCC 9.4.0]
+      render: shell
+  - type: dropdown
+    id: os
+    attributes:
+      label: Operating system ?
+      options:
+        - Linux
+        - Mac
+        - PC
+        - Other
+    validations:
+      required: true
+  - type: textarea
+    id: additional-deps
+    attributes:
+      label: Additional dependencies ?
+      description: If applicable ie, if we can't reproduce without it
+      placeholder: |
+        Additional dependencies:
+        ```
+        pandas==0.23.2
+        marshmallow==3.10.0
+        ...
+        ```

.github/ISSUE_TEMPLATE/FEATURE-REQUEST.yml

@@ -0,0 +1,29 @@
+name: Feature request
+description: Suggest an idea for this project
+labels: [enhancement, needs triage]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please make sure that this feature wasn't already requested or already implemented in the main branch.
+  - type: textarea
+    id: current-problem
+    attributes:
+      label: Please describe the problem this feature would solve
+      description: A clear and concise description of what the problem is.
+    validations:
+      required: true
+  - type: textarea
+    id: proposed-solution
+    attributes:
+      label: Please describe the desired solution
+      description: A clear and concise description of what you want to happen.
+    validations:
+      required: true
+  - type: textarea
+    id: context
+    attributes:
+      label: Additional context
+      description: Add any other context about the feature request here.
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/QUESTION.yml

@@ -0,0 +1,19 @@
+name: Support question
+description: Questions about pylint that are not covered in the documentation
+labels: [question, needs triage, documentation]
+body:
+  - type: textarea
+    id: question
+    attributes:
+      label: Question
+    validations:
+      required: true
+  - type: textarea
+    id: documentation
+    attributes:
+      label: Documentation for future user
+      description:
+        Where did you expect this information to be ? What do we need to add or what do
+        we need to reorganize ?
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: true
+contact_links:
+  - name: Discord server
+    url: https://discord.gg/Egy6P8AMB5
+    about: Astroid and pylint informal dev discussion

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,22 +1,14 @@
 <!--
-
 Thank you for submitting a PR to pylint!
 
 To ease the process of reviewing your PR, do make sure to complete the following boxes.
 
-You can also read more about contributing to pylint in this document:
-https://github.com/PyCQA/pylint/blob/main/doc/development_guide/contribute.rst#repository
--->
-
-## Steps
-
 - [ ] Add yourself to CONTRIBUTORS if you are a new contributor.
 - [ ] Add a ChangeLog entry describing what your PR does.
-- [ ] If it's a new feature or an important bug fix, add a What's New entry in
+- [ ] If it's a new feature, or an important bug fix, add a What's New entry in
       `doc/whatsnew/<current release.rst>`.
 - [ ] Write a good description on what the PR does.
-
-## Description
+-->
 
 ## Type of Changes
 
@@ -29,11 +21,11 @@ https://github.com/PyCQA/pylint/blob/main/doc/development_guide/contribute.rst#r
 | ✓   | :hammer: Refactoring   |
 | ✓   | :scroll: Docs          |
 
-## Related Issue
+## Description
 
 <!--
 If this PR fixes a particular issue, use the following to automatically close that issue
 once this PR gets merged:
+-->
 
 Closes #XXX
--->

ChangeLog

@@ -18,6 +18,7 @@ Release date: TBA
   Put bug fixes that should not wait for a new minor version here
 
 
+
 What's New in Pylint 2.9.5?
 ===========================
 Release date: 2021-07-21