Add release github action workflow

Author: martinemde

.github/workflows/release.yml

@@ -0,0 +1,35 @@
+name: Release Gem
+
+on:
+  workflow_run:
+    workflows: ["CI"]
+    types:
+      - completed
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+jobs:
+  push:
+    if: |
+      github.event.workflow_run.conclusion == 'success' &&
+      github.repository == 'rubyatscale/chatwerk' &&
+      startsWith(github.ref, 'refs/tags/v')
+    runs-on: ubuntu-latest
+    environment: release
+    permissions:
+      contents: write
+      id-token: write
+
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@354a1ad156761f5ee2b7b13fa8e09943a5e8d252 # v1.229.0
+        with:
+          bundler-cache: true
+          ruby-version: ruby
+
+      # Release
+      - uses: rubygems/release-gem@a25424ba2ba8b387abc8ef40807c2c85b96cbe32 # v1