Added GitHub Actions

.github/workflows/coding-style.yml

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+name: Coding style
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - v*
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  php-cs-fixer:
+    name: Php-Cs-Fixer
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.1
+          tools: composer:v2
+
+      - name: Install dependencies
+        run: composer update --no-progress --prefer-dist --prefer-stable --optimize-autoloader --quiet
+
+      - name: Php-Cs-Fixer
+        run: vendor/bin/php-cs-fixer fix -v --dry-run
+
+  php-stan:
+    name: PHPStan
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.1
+          tools: composer:v2
+
+      - name: Install dependencies
+        run: composer update --no-progress --prefer-dist --prefer-stable --optimize-autoloader --quiet
+
+      - name: PhpStan
+        run: vendor/bin/phpstan analyse

.github/workflows/coverage.yml

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+name: Coverage
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - v*
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  coverage:
+    name: Coverage
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.1
+          coverage: none
+          extensions: tokenizer
+          tools: composer:v2
+
+      - name: Install dependencies
+        run: |
+          composer update --no-progress --prefer-dist --prefer-stable --optimize-autoloader --quiet
+          composer update --no-progress --prefer-dist --prefer-stable --optimize-autoloader --quiet --working-dir=vendor-bin/nettrine
+
+      - name: Generate the coverage report
+        run: vendor/bin/tester -p phpdbg -C -s --coverage ./coverage.xml --coverage-src ./src ./tests
+
+      - name: Upload the coverage report
+        env:
+          COVERALLS_REPO_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+        run: |
+          wget https://github.com/php-coveralls/php-coveralls/releases/download/v2.5.3/php-coveralls.phar
+          php php-coveralls.phar --verbose --config tests/.coveralls.yml

.github/workflows/tests.yml

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+name: Tests
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - v*
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  tests:
+    name: Unit Tests [PHP ${{ matrix.php-versions }}]
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php-versions: ['8.1', '8.2']
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-versions }}
+          tools: composer:v2
+
+      - name: Install dependencies
+        run: |
+          composer update --no-progress --prefer-dist --prefer-stable --optimize-autoloader --quiet
+          composer update --no-progress --prefer-dist --prefer-stable --optimize-autoloader --quiet --working-dir=vendor-bin/nettrine
+
+      - name: Run tests
+        run: vendor/bin/tester -C -s ./tests
+
+      - name: Install dependencies (lowest)
+        run: |
+          composer update --no-progress --prefer-dist --prefer-lowest --prefer-stable --optimize-autoloader --quiet
+          composer update --no-progress --prefer-dist --prefer-lowest --prefer-stable --optimize-autoloader --quiet --working-dir=vendor-bin/nettrine
+
+      - name: Run tests
+        run: vendor/bin/tester -C -s ./tests