chore: Migrate modules to use the Module util (#7964)

**What**
Apply the `Module` util to each module to handle the export and provide the linkable configuration object.

- Most joiner config that does not have any special config are removed/cleaned up in favor of the autogenerated one or simpler one
- linkable are now available in all modules
- cleaned up the dependencies of the modules

FIXES CORE-2410

packages/modules/promotion/src/index.ts

@@ -1,7 +1,6 @@
-import { ModuleExports } from "@medusajs/types"
+import { Module, Modules } from "@medusajs/utils"
 import { PromotionModuleService } from "@services"
 
-const moduleDefinition: ModuleExports = {
+export default Module(Modules.PROMOTION, {
   service: PromotionModuleService,
-}
-export default moduleDefinition
+})

packages/modules/promotion/src/joiner-config.ts

@@ -3,9 +3,4 @@ import { Campaign, Promotion, PromotionRule } from "@models"
 
 export const joinerConfig = defineJoinerConfig(Modules.PROMOTION, {
   models: [Promotion, Campaign, PromotionRule],
-  linkableKeys: {
-    promotion_id: Promotion.name,
-    campaign_id: Campaign.name,
-    promotion_rule_id: PromotionRule.name,
-  },
 })