GitHub Actions: Use new PHP workflow (#173)

This PR switches to the new PHP workflow, which combines linting, static
analysis, and unit testing. `phpcs.xml` file has been removed because
the new workflow provides a default config for it and the file did not
contain any special configurations anyway. In addition, allow GitHub
Actions workflow to run for every pull request instead of only
main-based pull requests.

Author: lippserd

.github/workflows/php.yml

@@ -1,42 +1,18 @@
-name: PHP Tests
+name: CI
 
 on:
   push:
     branches:
       - main
-      - release/*
+      - support/*
   pull_request:
-    branches:
-      - main
 
 jobs:
-  lint:
-    name: Static analysis for php ${{ matrix.php }} on ${{ matrix.os }}
-    runs-on: ${{ matrix.os }}
-
-    strategy:
-      fail-fast: false
-      matrix:
-        php: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3']
-        os: ['ubuntu-latest']
-
-    steps:
-      - name: Checkout code base
-        uses: actions/checkout@v4
-
-      - name: Setup PHP
-        uses: shivammathur/setup-php@v2
-        with:
-          php-version: ${{ matrix.php }}
-          tools: phpcs
-
-      - name: Setup dependencies
-        run: composer require -n --no-progress overtrue/phplint
-
-      - name: PHP Lint
-        if: ${{ ! cancelled() }}
-        run: ./vendor/bin/phplint -n --exclude={^vendor/.*} -- .
-
-      - name: PHP CodeSniffer
-        if: ${{ ! cancelled() }}
-        run: phpcs -wps --colors
+  php:
+    name: PHP
+    uses: Icinga/github-actions/.github/workflows/php.yml@main
+    with:
+      dependencies: |
+        {
+          "./vendor/icingaweb2-modules/icingadb" : "https://github.com/Icinga/icingadb-web.git"
+        }