4147 module validation (#4148)

* Add new arguments key and target. Make it possible use not only default target for db connections

* Add validation for a module name, regex and also reserved words

* Check machine name with correct regex and also check reserved names

Author: LOBsTerr

src/Utils/Validator.php

@@ -15,7 +15,7 @@ class Validator
     const REGEX_CLASS_NAME = '/^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]+$/';
     const REGEX_COMMAND_CLASS_NAME = '/^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]+Command$/';
     const REGEX_CONTROLLER_CLASS_NAME = '/^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]+Controller$/';
-    const REGEX_MACHINE_NAME = '/^[a-z0-9_]+$/';
+    const REGEX_MACHINE_NAME = '/^[a-z][a-z\d_]+$/';
     const REGEX_DEPENDENCY_NAME = '/^[a-z0-9_:]+$/';
     const REGEX_URI_NAME = '/^[a-z0-9_.]+$/';
     // This REGEX remove spaces between words
@@ -134,7 +134,12 @@ public function validateControllerName($class_name)
 
     public function validateMachineName($machine_name)
     {
-        if (preg_match(self::REGEX_MACHINE_NAME, $machine_name)) {
+        // @see https://www.drupal.org/docs/8/creating-custom-modules/naming-and-placing-your-drupal-8-module
+        $reserved_words = [
+            'src', 'lib', 'vendor', 'assets', 'css', 'files', 'images', 'js', 'misc', 'templates', 'includes',
+            'fixtures', 'Drupal',
+        ];
+        if (preg_match(self::REGEX_MACHINE_NAME, $machine_name) && !in_array($machine_name, $reserved_words)) {
             if (strlen($machine_name) > self::MAX_MACHINE_NAME) {
                 throw new \InvalidArgumentException(
                     sprintf(