Add GitHub Actions for testing and linting

Author: davidcelis

.github/workflows/linting.yml

@@ -0,0 +1,25 @@
+name: Linting
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+jobs:
+  run-linters:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Ruby and install gems
+        uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+          ruby-version: 3.4
+
+      - name: Lint Ruby code
+        run: |
+          bin/standardrb

.github/workflows/tests.yml

@@ -0,0 +1,28 @@
+name: Tests
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+jobs:
+  run-tests:
+    runs-on: ubuntu-latest
+
+    env:
+      RACK_ENV: test
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Ruby and install gems
+        uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+          ruby-version: 3.4
+
+      - name: Run tests
+        run: |
+          bin/rspec