Add Autotag

.github/workflows/release.yml

@@ -0,0 +1,17 @@
+name: Autotag and Release
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+
+jobs:
+  tag-release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: pantheon-systems/action-autotag@v0
+        with:
+          gh-token: ${{ github.token }}

README.md

@@ -31,4 +31,9 @@ uses: pantheon-systems/phpcompatibility-action@v1
 with:
   test-versions: 7.4-
   paths: ${{ github.workspace }}/src
-```
+```
+
+## Development
+
+### Autotag
+This project uses our [autotag action](https://github.com/pantheon-systems/action-autotag). New releases are created on each merge to `main`. See the [autotag readme](https://github.com/pantheon-systems/autotag?tab=readme-ov-file#usage) for details.