Backend Pacients, Doctors and MedicalHistory endpoints

- added for Pacients:
POST: /register
POST: /login
POST: /reset_password
PUT: /profile
DELETE: /profile

- added for Doctors:
POST: /register
POST: /login
POST: /reset_password
PUT: /profile
DELETE: /profile

- added for MedicalHistories:
POST: /:id (only by pacient) - done
GET: /:id (only by pacient) - done
PUT: /:id (only by doctor) - done
PUT /grand_access - TODO

backend/Infrastructure/Services/PostgreSQL/DoctorRepository.cs

@@ -3,18 +3,10 @@ using Core.Entities;
 using Infrastructure.Data;
 using Microsoft.EntityFrameworkCore;
 
-namespace Infrastructure.Services.PostgreSQL
+namespace Infrastructure.Services.PostgreSQL;
+
+public class DoctorRepository(HealthcareManagerDatabase context) : BasePostgreSQLRepository<Doctor>(context), IDoctorRepository
 {
-    public class DoctorRepository : BasePostgreSQLRepository<Doctor>, IDoctorRepository
-    {
-        public DoctorRepository(HealthcareManagerDatabase context) : base(context)
-        {
-        }
-
-        public async Task<bool> IsDoctorExisting(string email)
-        {
-            return await _context.Doctors.AnyAsync(d => d.Email == email);
-        }
-
-    }
+    public async Task<Doctor?> FindByEmailAsync(string email) 
+        => await _context.Doctors.FirstOrDefaultAsync(d => d.Email == email);
 }