Add plugin-check as dependency and incorporate ruleset

Author: westonruter

composer.json

@@ -20,6 +20,19 @@
     "ext-gd": "Required to use Modern Image Format's Dominant_Color_Image_Editor_GD class",
     "ext-zlib": "Required for compression of URL Metric data submitted to the REST API for storage in Optimization Detective"
   },
+  "repositories": [
+    {
+      "type": "composer",
+      "url": "https://wpackagist.org"
+    }
+  ],
+  "extra": {
+    "installer-paths": {
+      "vendor/{$vendor}/{$name}/": [
+        "wpackagist-plugin/plugin-check"
+      ]
+    }
+  },
   "require-dev": {
     "phpcompatibility/php-compatibility": "^9.3",
     "phpstan/extension-installer": "^1.3",
@@ -33,12 +46,14 @@
     "wp-phpunit/wp-phpunit": "^6.5",
     "yoast/phpunit-polyfills": "^4.0",
     "phpstan/php-8-stubs": "^0.4.0",
-    "phpstan/phpstan-strict-rules": "^1.6"
+    "phpstan/phpstan-strict-rules": "^1.6",
+    "wpackagist-plugin/plugin-check": "^1.5"
   },
   "config": {
     "allow-plugins": {
       "dealerdirect/phpcodesniffer-composer-installer": true,
-      "phpstan/extension-installer": true
+      "phpstan/extension-installer": true,
+      "composer/installers": true
     },
     "platform": {
       "php": "7.2"

composer.lock

@@ -2,6 +2,9 @@
 <ruleset name="WPP-Base" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://raw.githubusercontent.com/squizlabs/PHP_CodeSniffer/master/phpcs.xsd">
 	<description>Sniffs for WordPress plugins</description>
 
+	<rule ref="../../vendor/wpackagist-plugin/plugin-check/vendor/plugin-check/phpcs-sniffs/PluginCheck/ruleset.xml" />
+	<rule ref="./plugin-check.ruleset.xml"/>
+
 	<rule ref="PHPCompatibility"/>
 	<config name="testVersion" value="7.2-"/>