ci: release to luarocks when a new tag is pushed

.github/workflows/release-luarocks.yml

@@ -0,0 +1,23 @@
+# https://github.com/marketplace/actions/luarocks-tag-release
+name: LuaRocks release
+on:
+  push:
+    tags: # Will upload to luarocks.org when a tag is pushed
+      - "*"
+  pull_request: # Will test a local install without uploading to luarocks.org
+
+jobs:
+  luarocks-release:
+    runs-on: ubuntu-latest
+    name: LuaRocks upload
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: LuaRocks Upload
+        uses: nvim-neorocks/luarocks-tag-release@v6
+        env:
+          LUAROCKS_API_KEY: ${{ secrets.LUAROCKS_API_KEY }}
+        with:
+          # https://github.com/marketplace/actions/luarocks-tag-release#dependencies
+          dependencies: |
+            plenary.nvim