feat: Add currency module and remove currency models from region and pricing modules (#6536)

What:
- Creates a new currency module
- Removes currency model from the pricing module
- Removes currency model from region module

packages/currency/src/module-definition.ts

@@ -0,0 +1,45 @@
+import { ModuleExports } from "@medusajs/types"
+import * as ModuleServices from "@services"
+import { CurrencyModuleService } from "@services"
+import { Modules } from "@medusajs/modules-sdk"
+import * as Models from "@models"
+import * as ModuleModels from "@models"
+import { ModulesSdkUtils } from "@medusajs/utils"
+import * as ModuleRepositories from "@repositories"
+import initialDataLoader from "./loaders/initial-data"
+
+const migrationScriptOptions = {
+  moduleName: Modules.CURRENCY,
+  models: Models,
+  pathToMigrations: __dirname + "/migrations",
+}
+
+const runMigrations = ModulesSdkUtils.buildMigrationScript(
+  migrationScriptOptions
+)
+
+const revertMigration = ModulesSdkUtils.buildRevertMigrationScript(
+  migrationScriptOptions
+)
+
+const containerLoader = ModulesSdkUtils.moduleContainerLoaderFactory({
+  moduleModels: ModuleModels,
+  moduleRepositories: ModuleRepositories,
+  moduleServices: ModuleServices,
+})
+
+const connectionLoader = ModulesSdkUtils.mikroOrmConnectionLoaderFactory({
+  moduleName: Modules.CURRENCY,
+  moduleModels: Object.values(Models),
+  migrationsPath: __dirname + "/migrations",
+})
+
+const service = CurrencyModuleService
+const loaders = [containerLoader, connectionLoader, initialDataLoader] as any
+
+export const moduleDefinition: ModuleExports = {
+  service,
+  loaders,
+  revertMigration,
+  runMigrations,
+}