feat: event aggregator (#6218)

What:
- Event Aggregator Util
- Preparation for normalizing event in a new format (backward compatible with the current format)
- GQL Schema to joiner config and some Entities configured
- Link modules emmiting events

packages/link-modules/src/definitions/product-shipping-profile.ts

@@ -12,6 +12,9 @@ export const ProductShippingProfile: ModuleJoinerConfig = {
   alias: [
     {
       name: "product_shipping_profile",
+      args: {
+        entity: "LinkProductShippingProfile",
+      },
     },
   ],
   primaryKeys: ["id", "product_id", "profile_id"],

packages/link-modules/src/definitions/product-variant-inventory-item.ts

@@ -17,10 +17,13 @@ export const ProductVariantInventoryItem: ModuleJoinerConfig = {
   },
   alias: [
     {
-      name: "product_variant_inventory_item",
-    },
-    {
-      name: "product_variant_inventory_items",
+      name: [
+        "product_variant_inventory_item",
+        "product_variant_inventory_items",
+      ],
+      args: {
+        entity: "LinkProductVariantInventoryItem",
+      },
     },
   ],
   primaryKeys: ["id", "variant_id", "inventory_item_id"],

packages/link-modules/src/definitions/product-variant-price-set.ts

@@ -1,6 +1,6 @@
-import { LINKS } from "../links"
-import { ModuleJoinerConfig } from "@medusajs/types"
 import { Modules } from "@medusajs/modules-sdk"
+import { ModuleJoinerConfig } from "@medusajs/types"
+import { LINKS } from "../links"
 
 export const ProductVariantPriceSet: ModuleJoinerConfig = {
   serviceName: LINKS.ProductVariantPriceSet,
@@ -11,10 +11,10 @@ export const ProductVariantPriceSet: ModuleJoinerConfig = {
   },
   alias: [
     {
-      name: "product_variant_price_set",
-    },
-    {
-      name: "product_variant_price_sets",
+      name: ["product_variant_price_set", "product_variant_price_sets"],
+      args: {
+        entity: "LinkProductVariantPriceSet",
+      },
     },
   ],
   primaryKeys: ["id", "variant_id", "price_set_id"],