feat: add prepare release workflow for version bump and changelog generation

Author: jinzcdev

.github/workflows/npm-publish.yml

@@ -1,7 +1,4 @@
-# This workflow will run tests using node and then publish a package to GitHub Packages when a release is created
-# For more information see: https://docs.github.com/en/actions/publishing-packages/publishing-nodejs-packages
-
-name: Node.js Package
+name: Publish to NPM
 
 on:
   push:
@@ -32,10 +29,3 @@ jobs:
       - run: npm publish --access=public
         env:
           NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
-      
-      - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v7
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-          commit-message: "chore(release): update CHANGELOG.md and version"
-          base: main

.github/workflows/prepare-release.yml

@@ -0,0 +1,50 @@
+name: Prepare Release
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version to bump to (e.g. patch, minor, major, or specific version)'
+        required: true
+        default: 'patch'
+
+jobs:
+  prepare-release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+      
+      - name: Install dependencies
+        run: npm ci
+      
+      - name: Update version
+        run: |
+          npm version ${{ github.event.inputs.version }} --no-git-tag-version
+          NEW_VERSION=$(node -p "require('./package.json').version")
+          echo "NEW_VERSION=$NEW_VERSION" >> $GITHUB_ENV
+      
+      - name: Generate changelog
+        id: changelog
+        run: |
+          npx conventional-changelog-cli -p angular -i CHANGELOG.md -s
+      
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v7
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: "chore(release): v${{ env.NEW_VERSION }}"
+          title: "chore(release): prepare release v${{ env.NEW_VERSION }}"
+          body: |
+            Prepare release v${{ env.NEW_VERSION }}
+            
+            - Update version in package.json
+            - Update CHANGELOG.md
+          base: main
+          branch: release/v${{ env.NEW_VERSION }}