Add release note automation

.github/workflows/require-label.yml

@@ -0,0 +1,24 @@
+# adapted from https://github.com/chipsalliance/chisel/blob/main/.github/workflows/require-label.yml
+
+name: Require Release Notes Label
+
+on:
+  pull_request:
+    branches:
+      - main
+    types:
+      - opened
+      - synchronize
+      - reopened
+      - labeled
+      - unlabeled
+
+jobs:
+  check_labels:
+    name: Check Labels
+    runs-on: ubuntu-latest
+    steps:
+      - uses: docker://agilepathway/pull-request-label-checker:v1.4.25
+        with:
+          one_of: changelog:added,changelog:changed,changelog:fixed,changelog:omit,changelog:removed
+          repo_token: ${{ secrets.GITHUB_TOKEN }}