add workflows for release-drafter, stale and configure dependabot - i…

…n same way as in versions-maven-plugin

.github/dependabot.yml

@@ -0,0 +1,10 @@
+version: 2
+updates:
+  - package-ecosystem: "maven"
+    directory: "/"
+    schedule:
+      interval: "daily"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"

.github/release-drafter.yml

@@ -0,0 +1,2 @@
+_extends: .github
+tag-template: buildnumber-maven-plugin-$NEXT_MINOR_VERSION

.github/workflows/release-drafter.yml

@@ -0,0 +1,12 @@
+name: Release Drafter
+on:
+  push:
+    branches:
+      - master
+jobs:
+  update_release_draft:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: release-drafter/release-drafter@v5.15.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/stale.yml

@@ -0,0 +1,15 @@
+name: 'Close stale PR'
+on:
+  schedule:
+    - cron: '30 1 * * *'
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v4
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          stale-pr-message: 'This PR is stale because it has been open 365 days with no activity. Remove stale label or comment or this will be closed in 30 days.'
+          days-before-stale: 365
+          days-before-pr-close: 30