play with workflows

.github/workflows/test_lint.yml

@@ -0,0 +1,21 @@
+name: Test and lint
+on: [push, pull_request]
+
+jobs:
+  test-and-lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: '3.1.3'
+          bundler-cache: true
+
+      - name: Run tests
+        run: bundle exec rspec
+
+      - name: Run linter
+        run: echo Later