ci: add gitflow workflow action

Author: christopher-buss

.github/workflows/release.yml

@@ -1,7 +1,9 @@
 name: Release
 
 on:
-  push:
+  pull_request:
+    types:
+      - closed
     branches:
       - main
     paths:
@@ -10,6 +12,11 @@ on:
       - mantle.yml
       - package.json
   workflow_dispatch:
+    inputs:
+      version:
+        type: string
+        required: true
+        description: Version to release
 
 permissions:
   contents: write
@@ -84,3 +91,17 @@ jobs:
           ROBLOSECURITY: ${{ secrets.ROBLOSECURITY }}
           MANTLE_AWS_ACCESS_KEY_ID: ${{ secrets.MANTLE_AWS_ACCESS_KEY_ID }}
           MANTLE_AWS_SECRET_ACCESS_KEY: ${{ secrets.MANTLE_AWS_SECRET_ACCESS_KEY }}
+
+  release_workflow:
+    runs-on: ubuntu-latest
+    needs: deploy
+    steps:
+      - name: GitFlow workflow action - Release workflows
+        uses: hoangvvo/gitflow-workflow-action@0.3.7
+        with:
+          develop_branch: develop
+          main_branch: main
+          merge_back_from_main: false
+          version: ${{ inputs.version }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}