ci: Add issues to Backlog project

Author: brendanator

.github/workflows/issue-automation.yml

@@ -0,0 +1,17 @@
+name: Add issues to On Call project
+
+on:
+  issues:
+    types:
+    - opened
+    - labeled
+
+jobs:
+  add-to-project:
+    name: Add issue to "On Call"
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/[email protected]
+      with:
+        project-url: https://github.com/orgs/sourcery-ai/projects/3
+        github-token: ${{ secrets.ADD_TO_PROJECT_PAT }}