Implement Composer

.editorconfig

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+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.php]
+indent_style = space
+indent_size = 2
+
+[*.{js,jsx,ts,tsx,json,css,scss}]
+indent_style = space
+indent_size = 2
+
+[*.xml]
+indent_style = space
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false

.github/workflows/lint.yml

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+name: Lint
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.2'
+          coverage: none
+
+      - name: Get Composer Cache Directory
+        id: composer-cache
+        run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
+
+      - name: Cache Composer dependencies
+        uses: actions/cache@v4
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          restore-keys: ${{ runner.os }}-composer-
+
+      - name: Install Composer dependencies
+        run: composer install --prefer-dist --no-progress
+
+      - name: Run composer lint
+        run: composer lint

.vscode/settings.json

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+{
+  "[php]": {
+    "editor.defaultFormatter": "ValeryanM.vscode-phpsab",
+    "editor.formatOnSave": true
+  },
+  "phpsab.executablePathCBF": "./vendor/bin/phpcbf",
+  "phpsab.executablePathCS": "./vendor/bin/phpcs",
+  "phpsab.standard": "PSR12",
+  "phpsab.autoRulesetSearch": true
+}