Added ORM entities

src/entities/item.ts

@@ -0,0 +1,37 @@
+import { Collection, Entity, ManyToOne, OneToMany, PrimaryKey, Property } from '@mikro-orm/core';
+import { Sprite } from './sprite';
+import { CharacterItem } from './characterItem';
+import { ItemType, ItemRarity } from '../utilities/enums';
+
+@Entity()
+export class Item {
+  @PrimaryKey()
+  id!: string;
+
+  @Property()
+  name!: string;
+
+  @Property({ nullable: true })
+  description?: string;
+
+  @Property()
+  itemType!: ItemType;
+
+  @Property()
+  stackable = false;
+
+  @Property()
+  rarity: ItemRarity = ItemRarity.COMMON;
+
+  @ManyToOne(() => Sprite, { nullable: true })
+  sprite?: Sprite;
+
+  @Property()
+  createdAt = new Date();
+
+  @Property()
+  updatedAt = new Date();
+
+  @OneToMany(() => CharacterItem, characterItem => characterItem.item)
+  characters = new Collection<CharacterItem>(this);
+}