Allow database users to create/alter/drop routines (pterodactyl#3389)

Database users may wish to create/alter/drop stored procedures on their databases in order to use extra MySQL functionality.

Author: iamsilk

app/Repositories/Eloquent/DatabaseRepository.php

@@ -107,7 +107,7 @@ public function createUser(string $username, string $remote, string $password, $
     public function assignUserToDatabase(string $database, string $username, string $remote): bool
     {
         return $this->run(sprintf(
-            'GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, ALTER, INDEX, LOCK TABLES, EXECUTE ON `%s`.* TO `%s`@`%s`',
+            'GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, ALTER, INDEX, LOCK TABLES, CREATE ROUTINE, ALTER ROUTINE, EXECUTE ON `%s`.* TO `%s`@`%s`',
             $database,
             $username,
             $remote