Chore/rm main entity concept (#7709)

**What**
Update the `MedusaService` class, factory and types to remove the concept of main modules. The idea being that all method will be explicitly named and suffixes to represent the object you are trying to manipulate.
This pr also includes various fixes in different modules

Co-authored-by: Stevche Radevski <4820812+sradevski@users.noreply.github.com>
Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>

packages/modules/link-modules/src/definitions/readonly/cart-customer.ts

@@ -12,6 +12,9 @@ export const CartCustomer: ModuleJoinerConfig = {
         primaryKey: "id",
         foreignKey: "customer_id",
         alias: "customer",
+        args: {
+          methodSuffix: "Customers",
+        },
       },
     },
     {
@@ -21,6 +24,9 @@ export const CartCustomer: ModuleJoinerConfig = {
         primaryKey: "customer_id",
         foreignKey: "id",
         alias: "carts",
+        args: {
+          methodSuffix: "Carts",
+        },
         isList: true,
       },
     },

packages/modules/link-modules/src/definitions/readonly/cart-product.ts

@@ -12,6 +12,9 @@ export const CartProduct: ModuleJoinerConfig = {
         primaryKey: "id",
         foreignKey: "items.product_id",
         alias: "product",
+        args: {
+          methodSuffix: "Products",
+        },
       },
     },
     {
@@ -22,7 +25,7 @@ export const CartProduct: ModuleJoinerConfig = {
         foreignKey: "items.variant_id",
         alias: "variant",
         args: {
-          methodSuffix: "Variants",
+          methodSuffix: "ProductVariants",
         },
       },
     },

packages/modules/link-modules/src/definitions/readonly/cart-region.ts

@@ -12,6 +12,9 @@ export const CartRegion: ModuleJoinerConfig = {
         primaryKey: "id",
         foreignKey: "region_id",
         alias: "region",
+        args: {
+          methodSuffix: "Regions",
+        },
       },
     },
     {
@@ -21,6 +24,9 @@ export const CartRegion: ModuleJoinerConfig = {
         primaryKey: "region_id",
         foreignKey: "id",
         alias: "carts",
+        args: {
+          methodSuffix: "Carts",
+        },
         isList: true,
       },
     },

packages/modules/link-modules/src/definitions/readonly/cart-sales-channel.ts

@@ -12,6 +12,9 @@ export const CartSalesChannel: ModuleJoinerConfig = {
         primaryKey: "id",
         foreignKey: "sales_channel_id",
         alias: "sales_channel",
+        args: {
+          methodSuffix: "SalesChannels",
+        },
       },
     },
     {
@@ -21,6 +24,9 @@ export const CartSalesChannel: ModuleJoinerConfig = {
         primaryKey: "sales_channel_id",
         foreignKey: "id",
         alias: "carts",
+        args: {
+          methodSuffix: "Carts",
+        },
         isList: true,
       },
     },

packages/modules/link-modules/src/definitions/readonly/inventory-level-stock-location.ts

@@ -12,6 +12,9 @@ export const InventoryLevelStockLocation: ModuleJoinerConfig = {
         primaryKey: "id",
         foreignKey: "location_id",
         alias: "stock_locations",
+        args: {
+          methodSuffix: "StockLocations",
+        },
         isList: true,
       },
     },

packages/modules/link-modules/src/definitions/readonly/line-item-adjustment-promotion.ts

@@ -12,6 +12,9 @@ export const LineItemAdjustmentPromotion: ModuleJoinerConfig = {
         primaryKey: "id",
         foreignKey: "promotion_id",
         alias: "promotion",
+        args: {
+          methodSuffix: "Promotions",
+        },
       },
     },
   ],

packages/modules/link-modules/src/definitions/readonly/order-customer.ts

@@ -12,6 +12,9 @@ export const OrderCustomer: ModuleJoinerConfig = {
         primaryKey: "id",
         foreignKey: "customer_id",
         alias: "customer",
+        args: {
+          methodSuffix: "Customers",
+        },
       },
     },
     {
@@ -21,6 +24,9 @@ export const OrderCustomer: ModuleJoinerConfig = {
         primaryKey: "customer_id",
         foreignKey: "id",
         alias: "orders",
+        args: {
+          methodSuffix: "Orders",
+        },
         isList: true,
       },
     },

packages/modules/link-modules/src/definitions/readonly/order-product.ts

@@ -12,6 +12,9 @@ export const OrderProduct: ModuleJoinerConfig = {
         primaryKey: "id",
         foreignKey: "items.product_id",
         alias: "product",
+        args: {
+          methodSuffix: "Products",
+        },
       },
     },
     {
@@ -22,7 +25,7 @@ export const OrderProduct: ModuleJoinerConfig = {
         foreignKey: "items.variant_id",
         alias: "variant",
         args: {
-          methodSuffix: "Variants",
+          methodSuffix: "ProductVariants",
         },
       },
     },

packages/modules/link-modules/src/definitions/readonly/order-region.ts

@@ -12,6 +12,9 @@ export const OrderRegion: ModuleJoinerConfig = {
         primaryKey: "id",
         foreignKey: "region_id",
         alias: "region",
+        args: {
+          methodSuffix: "Regions",
+        },
       },
     },
     {
@@ -21,6 +24,9 @@ export const OrderRegion: ModuleJoinerConfig = {
         primaryKey: "region_id",
         foreignKey: "id",
         alias: "orders",
+        args: {
+          methodSuffix: "Orders",
+        },
         isList: true,
       },
     },

packages/modules/link-modules/src/definitions/readonly/order-sales-channel.ts

@@ -13,6 +13,9 @@ export const OrderSalesChannel: ModuleJoinerConfig = {
         primaryKey: "id",
         foreignKey: "sales_channel_id",
         alias: "sales_channel",
+        args: {
+          methodSuffix: "SalesChannels",
+        },
       },
     },
     {
@@ -22,6 +25,9 @@ export const OrderSalesChannel: ModuleJoinerConfig = {
         primaryKey: "sales_channel_id",
         foreignKey: "id",
         alias: "orders",
+        args: {
+          methodSuffix: "Orders",
+        },
         isList: true,
       },
     },

packages/modules/link-modules/src/definitions/readonly/store-default-currency.ts

@@ -12,6 +12,9 @@ export const StoreDefaultCurrency: ModuleJoinerConfig = {
         primaryKey: "code",
         foreignKey: "default_currency_code",
         alias: "default_currency",
+        args: {
+          methodSuffix: "Currencies",
+        },
       },
     },
   ],