Workflow to label PRs with "needs release notes" (#396)

Author: Saransh-cpp

.github/labeler.yml

@@ -0,0 +1,2 @@
+needs release notes:
+- all: ['!docs/release.rst']

.github/workflows/needs-release-notes.yaml

@@ -0,0 +1,13 @@
+name: "Pull Request Labeler"
+
+ on:
+   - pull_request_target
+
+ jobs:
+   triage:
+     runs-on: ubuntu-latest
+     steps:
+     - uses: actions/labeler@main
+       with:
+         repo-token: ${{ secrets.GITHUB_TOKEN }}
+         sync-labels: true

docs/release.rst

@@ -56,6 +56,9 @@ Maintenance
 * Add tests for all registry classes.
   By :user:`Josh Moore <joshmoore>`, :issue:`349`.
 
+* Add workflow to label PRs with "needs release notes".
+  By :user:`Saransh Chopra <Saransh-cpp>` :issue:`396`.
+
 * Finish ``pyproject.toml`` migration.
   By :user:`John Kirkham <jakirkham>` :issue:`382`.