Adds workflow to tag major version (#22)

Author: geofflamrock

.github/workflows/update-major-version.yml

@@ -0,0 +1,19 @@
+name: Update Major Version Tag
+
+on:
+  push:
+    tags:
+      - "v*"
+
+  workflow_dispatch:
+
+jobs:
+  update-majorver:
+    name: Update Major Version Tag
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: nowactions/update-majorver@v1
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}