CI: Migrate to GitHub Actions

Author: Watson1978

.github/workflows/test.yml

@@ -0,0 +1,31 @@
+name: Test
+
+on:
+  push:
+    branches:
+      - main
+
+  pull_request:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: ['ubuntu-latest', 'macos-latest', 'windows-latest']
+        ruby-version: ['2.7', '3.0', '3.1', '3.2', '3.3', '3.4', '4.0']
+
+    name: Ruby ${{ matrix.ruby-version }} on ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v6
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby-version }}
+      - name: Run tests
+        run: bundle exec rake