chore: add standard WP index files

composer.json

@@ -11,8 +11,8 @@
         "lint:fix": "composer run lint:php:fix && npm run lint:fix",
         "format": "npm run format",
         "format:fix": "npm run format:fix",
-        "lint:php": "./vendor/bin/phpcs --standard=WordPress,PHPCompatibilityWP --runtime-set testVersion 7.0- --colors --encoding=utf-8 -p ./src/*.php ./src/*/*.php ./src/*/*/*.php",
+        "lint:php": "./vendor/bin/phpcs --standard=WordPress,PHPCompatibilityWP --runtime-set testVersion 7.0- --colors --encoding=utf-8 -p --ignore=index.php ./src/*.php ./src/*/*.php ./src/*/*/*.php",
-        "lint:php:fix": "./vendor/bin/phpcbf --standard=WordPress,PHPCompatibilityWP --runtime-set testVersion 7.0- --colors --encoding=utf-8 -p ./src/*.php ./src/*/*.php ./src/*/*/*.php", 
+        "lint:php:fix": "./vendor/bin/phpcbf --standard=WordPress,PHPCompatibilityWP --runtime-set testVersion 7.0- --colors --encoding=utf-8 -p --ignore=index.php ./src/*.php ./src/*/*.php ./src/*/*/*.php", 
         "lint:css": "npm run lint:css",
         "lint:css:fix": "npm run lint:css:fix",
         "lint:js": "npm run lint:js",

src/admin/index.php

@@ -0,0 +1 @@
+<?php // Silence is golden

src/includes/index.php

@@ -0,0 +1 @@
+<?php // Silence is golden

src/index.php

@@ -0,0 +1 @@
+<?php // Silence is golden

src/public/index.php

@@ -0,0 +1 @@
+<?php // Silence is golden