chore(): Reorganize modules (#7210)

**What**
Move all modules to the modules directory

packages/modules/order/src/models/order-item.ts

@@ -0,0 +1,164 @@
+import { BigNumberRawValue, DAL } from "@medusajs/types"
+import {
+  BigNumber,
+  MikroOrmBigNumberProperty,
+  createPsqlIndexStatementHelper,
+  generateEntityId,
+} from "@medusajs/utils"
+import {
+  BeforeCreate,
+  Entity,
+  ManyToOne,
+  OnInit,
+  OptionalProps,
+  PrimaryKey,
+  Property,
+} from "@mikro-orm/core"
+import LineItem from "./line-item"
+import Order from "./order"
+
+type OptionalLineItemProps = DAL.EntityDateColumns
+
+const OrderIdIndex = createPsqlIndexStatementHelper({
+  tableName: "order_item",
+  columns: ["order_id"],
+  where: "deleted_at IS NOT NULL",
+})
+
+const OrderVersionIndex = createPsqlIndexStatementHelper({
+  tableName: "order_item",
+  columns: ["version"],
+  where: "deleted_at IS NOT NULL",
+})
+
+const ItemIdIndex = createPsqlIndexStatementHelper({
+  tableName: "order_item",
+  columns: ["item_id"],
+  where: "deleted_at IS NOT NULL",
+})
+
+const DeletedAtIndex = createPsqlIndexStatementHelper({
+  tableName: "order",
+  columns: "deleted_at",
+  where: "deleted_at IS NOT NULL",
+})
+
+@Entity({ tableName: "order_item" })
+export default class OrderItem {
+  [OptionalProps]?: OptionalLineItemProps
+
+  @PrimaryKey({ columnType: "text" })
+  id: string
+
+  @ManyToOne({
+    entity: () => Order,
+    mapToPk: true,
+    fieldName: "order_id",
+    columnType: "text",
+  })
+  @OrderIdIndex.MikroORMIndex()
+  order_id: string
+
+  @Property({ columnType: "integer" })
+  @OrderVersionIndex.MikroORMIndex()
+  version: number
+
+  @ManyToOne(() => Order, {
+    persist: false,
+  })
+  order: Order
+
+  @ManyToOne({
+    entity: () => LineItem,
+    fieldName: "item_id",
+    mapToPk: true,
+    columnType: "text",
+  })
+  @ItemIdIndex.MikroORMIndex()
+  item_id: string
+
+  @ManyToOne(() => LineItem, {
+    persist: false,
+  })
+  item: LineItem
+
+  @MikroOrmBigNumberProperty()
+  quantity: BigNumber | number
+
+  @Property({ columnType: "jsonb" })
+  raw_quantity: BigNumberRawValue
+
+  @MikroOrmBigNumberProperty()
+  fulfilled_quantity: BigNumber | number = 0
+
+  @Property({ columnType: "jsonb" })
+  raw_fulfilled_quantity: BigNumberRawValue
+
+  @MikroOrmBigNumberProperty()
+  shipped_quantity: BigNumber | number = 0
+
+  @Property({ columnType: "jsonb" })
+  raw_shipped_quantity: BigNumberRawValue
+
+  @MikroOrmBigNumberProperty()
+  return_requested_quantity: BigNumber | number = 0
+
+  @Property({ columnType: "jsonb" })
+  raw_return_requested_quantity: BigNumberRawValue
+
+  @MikroOrmBigNumberProperty()
+  return_received_quantity: BigNumber | number = 0
+
+  @Property({ columnType: "jsonb" })
+  raw_return_received_quantity: BigNumberRawValue
+
+  @MikroOrmBigNumberProperty()
+  return_dismissed_quantity: BigNumber | number = 0
+
+  @Property({ columnType: "jsonb" })
+  raw_return_dismissed_quantity: BigNumberRawValue
+
+  @MikroOrmBigNumberProperty()
+  written_off_quantity: BigNumber | number = 0
+
+  @Property({ columnType: "jsonb" })
+  raw_written_off_quantity: BigNumberRawValue
+
+  @Property({ columnType: "jsonb", nullable: true })
+  metadata: Record<string, unknown> | null = null
+
+  @Property({
+    onCreate: () => new Date(),
+    columnType: "timestamptz",
+    defaultRaw: "now()",
+  })
+  created_at: Date
+
+  @Property({
+    onCreate: () => new Date(),
+    onUpdate: () => new Date(),
+    columnType: "timestamptz",
+    defaultRaw: "now()",
+  })
+  updated_at: Date
+
+  @Property({ columnType: "timestamptz", nullable: true })
+  @DeletedAtIndex.MikroORMIndex()
+  deleted_at: Date | null = null
+
+  @BeforeCreate()
+  onCreate() {
+    this.id = generateEntityId(this.id, "orditem")
+    this.order_id ??= this.order?.id
+    this.item_id ??= this.item?.id
+    this.version ??= this.order?.version
+  }
+
+  @OnInit()
+  onInit() {
+    this.id = generateEntityId(this.id, "orditem")
+    this.order_id ??= this.order?.id
+    this.item_id ??= this.item?.id
+    this.version ??= this.order?.version
+  }
+}