Set up linting and tests workflow

.github/workflows/linting.yml

@@ -0,0 +1,30 @@
+name: Linting
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+permissions:
+  contents: read
+
+jobs:
+  linting:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Ruby and install dependencies
+        uses: ruby/setup-ruby@v1
+        with:
+          # uses .ruby-version implicitly
+          bundler-cache: true
+
+      - name: Lint Ruby code
+        run: bundle exec rubocop
+
+      - name: Lint YAML
+        run: yamllint .

.github/workflows/tests.yml

@@ -0,0 +1,40 @@
+name: Tests
+
+on:
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  tests:
+    strategy:
+      matrix:
+        # test a range of Ruby to ensure gem works
+        # keep ruby until EOL. Read more on https://endoflife.date/ruby
+        ruby-version:
+          - 3.0
+          - 3.1
+          - 3.2
+          - 3.3
+          - head
+        # test distributions up to 4 years
+        runner:
+          - ubuntu-22.04
+          - ubuntu-20.04
+      fail-fast: false # allows contributors understand failure builds
+
+    runs-on: ${{ matrix.runner }}
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Ruby and install dependencies
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby-version }}
+          bundler-cache: true
+
+      - name: Run tests
+        run: bundle exec rake spec