ci: test on GH actions

.github/workflows/test.yml

@@ -0,0 +1,32 @@
+name: CI
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    env:
+      BUNDLE_JOBS: 4
+    strategy:
+      matrix:
+        ruby: [3.1, 3.2, 3.3]
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+      - uses: actions/setup-node@v4
+      - name: Install Playwright Browsers
+        run: npx playwright install --with-deps chromium
+      - name: Run tests
+        run: bundle exec rspec spec