Can not generate Nova resource in Laravel >=11

[DenTray]

Since Laravel 11 is no longer support the getDoctrineSchemaManager need to update the NovaResourceGenerator class to use another way to parse columns.

Need

References:

• getDoctrineSchemaManager doesn't exist reliese/laravel#283
• Method Illuminate\Database\PostgresConnection::getDoctrineSchemaManager does not exist reliese/laravel#286

[RGO230]

@DenTray done, please, check

[DenTray]

@RGO230 works good now, thanks! Released in https://github.com/RonasIT/laravel-entity-generator/releases/tag/3.3.5