Ft/authentication

[MassterJoe]

These are the changes i had to make in the codebase

1. Adjusted the code structure
   Added auth folder to contain everything about authentication
2. Adjusted the Admin entity and disconnected it from others when i was having difficulty using them,
   I will complete the other entities to meet the new changes
3. adjusted the package.json file for migration
4. added helpers/utils.js etc
5. Check the config.service.ts file, will be adjusted when other entities are added
6. I commented out the original code in the baseRepository i changed it to adminRepository

New

1. Login implemented with jwt