Minor updates

- Added .phpunit.result.cache to .gitignore
- Added workflow .github/workflows/php.yml

Author: tlmcclatchey

.github/workflows/php.yml

@@ -0,0 +1,38 @@
+name: PHP CI/CD Pipeline
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.1'
+          extensions: mbstring, xml, ctype, iconv, intl, pdo_sqlite
+          coverage: xdebug
+
+      - name: Validate composer.json and composer.lock
+        run: composer validate
+
+      - name: Install dependencies
+        run: composer install --prefer-dist --no-progress
+
+      - name: Run tests
+        run: ./vendor/bin/phpunit
+
+    # If you have a deployment step, you can include it here.
+    # This could be pushing to a Docker registry, deploying to a cloud platform, etc.
+    # - name: Deploy...

.gitignore

@@ -1,3 +1,4 @@
 .idea/
 composer.lock
-vendor/
+vendor/
+.phpunit.result.cache