add github action

.github/workflows/ruby.yml

@@ -0,0 +1,26 @@
+name: github-actions-rails
+
+on:
+  pull_request:
+    branches: ['*']
+  push:
+    branches: [master]
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby-version: ['2.7', '3.0', '3.1', '3.2', '3.3', 'head', 'truffleruby', 'truffleruby-head']
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Ruby ${{ matrix.ruby-version }}
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby-version }}
+          bundler: default
+          bundler-cache: true
+      - name: Run tests
+        env:
+          RAILS_ENV: test
+        run: |
+        bundle exec rake