(MAINT) Add labeller and stale GHA workflows

.github/workflows/labeller.yml

@@ -0,0 +1,22 @@
+name: community-labeller
+
+on:
+  issues:
+    types:
+      - opened
+  pull_request:
+    types:
+      - opened
+
+jobs:
+  label:
+    runs-on: ubuntu-latest
+    steps:
+
+      - uses: puppetlabs/community-labeller@v0
+        name: Label issues or pull requests
+        with:
+          label_name: community
+          label_color: '5319e7'
+          org_membership: puppetlabs
+          token: ${{ secrets.IAC_COMMUNITY_LABELER }}

.github/workflows/stale.yml

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+name: Mark stale issues and pull requests
+
+on:
+  schedule:
+  - cron: "30 1 * * *"
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/stale@v3
+      with:
+        repo-token: ${{ secrets.GITHUB_TOKEN }}
+        days-before-stale: 60
+        days-before-close: 7
+        stale-issue-message: 'This issue has been marked as stale because it has been open for a while and has had no recent activity. If this issue is still important to you please drop a comment below and we will add this to our backlog to complete. Otherwise, it will be closed in 7 days.'
+        stale-issue-label: 'stale'
+        stale-pr-message: 'This PR has been marked as stale because it has been open for a while and has had no recent activity. If this PR is still important to you please drop a comment below and we will add this to our backlog to complete. Otherwise, it will be closed in 7 days.'
+        stale-pr-label: 'stale'