Some changes

Add redis caching

Make tests for `ProjectService`

Make tests for `ProjectService`

Make tests for `UserStatsService`

Make tests for `UserService`

Make tests for `ProjectController`

Rename field and add getter for it

Create Test classes for services without realization yet

Remove useless text from blocks

Fixes

Fixes

Fixes

Fixes

Fixes

Remove unused imports

Remove field `projects` from User class

Fixes for DB connection

Realization of Repositories

Realization of Repositories

Realization of mapper (Domain <-> Entity)

Realization of domain

Files for DB connection

Extra files for project

Create classes for DB connection

New structure