Ability to set nova resource for nova tests generator

[DenTray]

Need to provide the ability to set the target nova resource class for the nova tests generating process.

How it should works

The make entity command should expect new named option --nova-resource-name=***. In case this option passed, generator should search passed resource name and use it for the nova tests generator.

User should be able to pass the invested path inside the app/Nova folder, e.g. Stuff\General\ManagerResource

In case nova resource name passed via console option - target tests class should have name based on the passed nova resource instead of model