feat: add rental_category/rate to Room, rental_type/tenant_id to Occupancy, tenant_id to Student

apps/server/src/entities/room.entity.ts

@@ -28,6 +28,12 @@ export class Room {
   @Column({ length: 10, nullable: true })
   gender: string;
 
+  @Column({ name: 'rental_category', length: 10, default: 'short' })
+  rentalCategory: string;
+
+  @Column({ name: 'monthly_rate', type: 'decimal', precision: 10, scale: 2, default: 0 })
+  monthlyRate: number;
+
   @CreateDateColumn({ name: 'created_at' })
   createdAt: Date;