ci: introduce workflow for tracking issues/prs

Author: russellwheatley

.github/workflows/project-manager.yml

@@ -0,0 +1,24 @@
+name: Forward issue + PR activity to project board manager
+
+on:
+  issues:
+    types: [opened, reopened, closed, labeled, unlabeled]
+  issue_comment:
+    types: [created]
+  pull_request:
+    types: [opened, edited, reopened, synchronize]
+
+permissions:
+  id-token: write
+  contents: read
+  issues: read
+  pull-requests: read
+
+jobs:
+  forward:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: invertase/invertase-project-board@v1
+        with:
+          project-boards: '[73]'