Add support for GitHub as CI in plugin scaffold

src/Scaffold_Command.php

@@ -607,7 +607,9 @@ private function get_output_path( $assoc_args, $subdir ) {
 	 * default: circle
 	 * options:
 	 *   - circle
+	 *   - bitbucket
 	 *   - gitlab
+	 *   - github
 	 * ---
 	 *
 	 * [--activate]
@@ -733,6 +735,7 @@ public function plugin( $args, $assoc_args ) {
 	 *   - circle
 	 *   - gitlab
 	 *   - bitbucket
+	 *   - github
 	 * ---
 	 *
 	 * [--force]
@@ -785,6 +788,7 @@ public function plugin_tests( $args, $assoc_args ) {
 	 *   - circle
 	 *   - gitlab
 	 *   - bitbucket
+	 *   - github
 	 * ---
 	 *
 	 * [--force]
@@ -882,6 +886,8 @@ private function scaffold_plugin_theme_tests( $args, $assoc_args, $type ) {
 			$files_to_create[ "{$target_dir}/.gitlab-ci.yml" ] = self::mustache_render( 'plugin-gitlab.mustache' );
 		} elseif ( 'bitbucket' === $assoc_args['ci'] ) {
 			$files_to_create[ "{$target_dir}/bitbucket-pipelines.yml" ] = self::mustache_render( 'plugin-bitbucket.mustache' );
+		} elseif ( 'github' === $assoc_args['ci'] ) {
+			$files_to_create[ "{$target_dir}/.github/workflows/testing.yml" ] = self::mustache_render( 'plugin-github.mustache' );
 		}
 
 		$files_written = $this->create_files( $files_to_create, $force );

templates/plugin-github.mustache

@@ -0,0 +1,38 @@
+name: Testing
+
+on:
+  pull_request:
+    branches:
+      - main
+      - master
+
+jobs:
+  phpunit:
+    name: Run tests
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php-version: ['8.2', '8.0', '7.4']
+    services:
+      database:
+        image: mysql:latest
+        env:
+          MYSQL_DATABASE: wordpress_tests
+          MYSQL_ROOT_PASSWORD: root
+        ports:
+          - 3306:3306
+    steps:
+      - name: Check out source code
+        uses: actions/checkout@v4
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-version }}
+          tools: phpunit-polyfills:1.1
+
+      - name: Setup tests
+        run: bash bin/install-wp-tests.sh wordpress_tests root root 127.0.0.1 latest true
+
+      - name: Run tests
+        run: phpunit