feat: Add release workflow

This commit adds a new GitHub Actions workflow to create releases.
The workflow is manually triggered and accepts a version number and a pre-release flag.

Author: google-labs-jules[bot]

.github/workflows/release.yml

@@ -0,0 +1,31 @@
+name: Create Release
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version to release (e.g., 1.0.0)'
+        required: true
+        type: string
+      prerelease:
+        description: 'Is this a pre-release?'
+        required: true
+        type: boolean
+        default: false
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: v${{ github.event.inputs.version }}
+          release_name: Release v${{ github.event.inputs.version }}
+          body: |
+            Release v${{ github.event.inputs.version }}
+          draft: false
+          prerelease: ${{ github.event.inputs.prerelease }}