add core api

src/database/entities/city.entity.ts

@@ -1,14 +1,9 @@
-import { Airport } from "@/database/entities/airport.entity";
 import { Country } from "@/database/entities/country.entity";
-import { Hotel } from "@/database/entities/hotel.entity";
 import {
-	Collection,
 	Entity,
 	ManyToOne,
-	OneToMany,
 	PrimaryKey,
 	Property,
-	Unique,
 	type Rel,
 } from "@mikro-orm/core";
 
@@ -17,10 +12,6 @@ export class City {
 	@PrimaryKey({ type: "varchar", length: 30 })
 	id!: string;
 
-	@Property({ type: "varchar", length: 200 })
-	@Unique()
-	slug!: string;
-
 	@Property({ type: "varchar", length: 100 })
 	name!: string;
 
@@ -39,12 +30,4 @@ export class City {
 		onUpdate: () => new Date(),
 	})
 	updatedAt!: Date;
-
-	// Collections
-
-	@OneToMany(() => Airport, (airport) => airport.city)
-	cities = new Collection<City>(this);
-
-	@OneToMany(() => Hotel, (hotel) => hotel.city)
-	hotels = new Collection<Hotel>(this);
 }