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/region/src/services/region-module.ts

@@ -6,7 +6,6 @@ import {
   InferEntityType,
   InternalModuleDeclaration,
   IRegionModuleService,
-  ModuleJoinerConfig,
   ModulesSdkTypes,
   RegionCountryDTO,
   RegionDTO,
@@ -28,7 +27,6 @@ import {
 } from "@medusajs/utils"
 import { Country, Region } from "@models"
 import { UpdateRegionInput } from "@types"
-import { joinerConfig } from "../joiner-config"
 
 type InjectedDependencies = {
   baseRepository: DAL.RepositoryService
@@ -68,10 +66,6 @@ export default class RegionModuleService
     this.countryService_ = countryService
   }
 
-  __joinerConfig(): ModuleJoinerConfig {
-    return joinerConfig
-  }
-
   // @ts-expect-error
   async createRegions(
     data: CreateRegionDTO[],