Removed some dead code on the interfaces. Introduced UnitOfWork to simplify repo injection.

API/Interfaces/IUserRepository.cs

@@ -8,12 +8,8 @@ namespace API.Interfaces
     public interface IUserRepository
     {
         void Update(AppUser user);
-        Task<bool> SaveAllAsync();
-        Task<IEnumerable<AppUser>> GetUsersAsync();
-        Task<AppUser> GetUserByIdAsync(int id);
         Task<AppUser> GetUserByUsernameAsync(string username);
         Task<IEnumerable<MemberDto>>  GetMembersAsync();
-        Task<MemberDto> GetMemberAsync(string username);
         public void Delete(AppUser user);
         Task<IEnumerable<AppUser>> GetAdminUsersAsync();
     }