feature: users with treatment edit permission should now have working hours defined. the appointment grid is now being drawn based on the doctor's working hours.

backend/src/modules/staff/staff.module.ts

@@ -2,9 +2,11 @@ import { Module } from '@nestjs/common';
 import { PrismaService } from '../../../prisma/prisma.service';
 import { StaffController } from './staff.controller';
 import { StaffService } from './staff.service';
+import { StaffWorkingHoursService } from './staff-working-hours.service';
 
 @Module({
   controllers: [StaffController],
-  providers: [StaffService, PrismaService],
+  providers: [StaffService, StaffWorkingHoursService, PrismaService],
+  exports: [StaffWorkingHoursService],
 })
 export class StaffModule {}