chore(): Reorganize modules (#7210)

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

packages/modules/inventory-next/src/schema/index.ts

@@ -0,0 +1,55 @@
+export default `
+scalar DateTime
+scalar JSON
+
+type InventoryItem {
+  id: ID!
+  created_at: DateTime!
+  updated_at: DateTime!
+  deleted_at: DateTime
+  sku: String
+  origin_country: String
+  hs_code: String
+  mid_code: String
+  material: String
+  weight: Int
+  length: Int
+  height: Int
+  width: Int
+  requires_shipping: Boolean!
+  description: String
+  title: String
+  thumbnail: String
+  metadata: JSON
+  
+  inventory_levels: [InventoryLevel]
+}
+
+type InventoryLevel {
+  id: ID!
+  created_at: DateTime!
+  updated_at: DateTime!
+  deleted_at: DateTime
+  inventory_item_id: String!
+  location_id: String!
+  stocked_quantity: Int!
+  reserved_quantity: Int!
+  incoming_quantity: Int!
+  metadata: JSON
+}
+
+type ReservationItem {
+  id: ID!
+  created_at: DateTime!
+  updated_at: DateTime!
+  deleted_at: DateTime
+  line_item_id: String
+  inventory_item_id: String!
+  location_id: String!
+  quantity: Int!
+  external_id: String
+  description: String
+  created_by: String
+  metadata: JSON
+}
+`