chore(): Reorganize modules (#7210)

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

packages/modules/customer/src/models/customer.ts

@@ -0,0 +1,101 @@
+import { DAL } from "@medusajs/types"
+import { DALUtils, Searchable, generateEntityId } from "@medusajs/utils"
+import {
+  BeforeCreate,
+  Cascade,
+  Collection,
+  Entity,
+  Filter,
+  ManyToMany,
+  OnInit,
+  OneToMany,
+  OptionalProps,
+  PrimaryKey,
+  Property,
+} from "@mikro-orm/core"
+import Address from "./address"
+import CustomerGroup from "./customer-group"
+import CustomerGroupCustomer from "./customer-group-customer"
+
+type OptionalCustomerProps =
+  | "groups"
+  | "addresses"
+  | DAL.SoftDeletableEntityDateColumns
+
+@Entity({ tableName: "customer" })
+@Filter(DALUtils.mikroOrmSoftDeletableFilterOptions)
+export default class Customer {
+  [OptionalProps]?: OptionalCustomerProps
+
+  @PrimaryKey({ columnType: "text" })
+  id: string
+
+  @Searchable()
+  @Property({ columnType: "text", nullable: true })
+  company_name: string | null = null
+
+  @Searchable()
+  @Property({ columnType: "text", nullable: true })
+  first_name: string | null = null
+
+  @Searchable()
+  @Property({ columnType: "text", nullable: true })
+  last_name: string | null = null
+
+  @Searchable()
+  @Property({ columnType: "text", nullable: true })
+  email: string | null = null
+
+  @Searchable()
+  @Property({ columnType: "text", nullable: true })
+  phone: string | null = null
+
+  @Property({ columnType: "boolean", default: false })
+  has_account: boolean = false
+
+  @Property({ columnType: "jsonb", nullable: true })
+  metadata: Record<string, unknown> | null = null
+
+  @ManyToMany({
+    mappedBy: "customers",
+    entity: () => CustomerGroup,
+    pivotEntity: () => CustomerGroupCustomer,
+  })
+  groups = new Collection<CustomerGroup>(this)
+
+  @OneToMany(() => Address, (address) => address.customer, {
+    cascade: [Cascade.REMOVE],
+  })
+  addresses = new Collection<Address>(this)
+
+  @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 })
+  deleted_at: Date | null = null
+
+  @Property({ columnType: "text", nullable: true })
+  created_by: string | null = null
+
+  @BeforeCreate()
+  onCreate() {
+    this.id = generateEntityId(this.id, "cus")
+  }
+
+  @OnInit()
+  onInit() {
+    this.id = generateEntityId(this.id, "cus")
+  }
+}