chore(): Reorganize modules (#7210)

**What**
Move all modules to the modules directory

packages/modules/file/src/module-definition.ts

@@ -0,0 +1,28 @@
+import { ModuleExports } from "@medusajs/types"
+import { FileModuleService } from "@services"
+import loadProviders from "./loaders/providers"
+import * as ModuleServices from "@services"
+import { ModulesSdkUtils } from "@medusajs/utils"
+
+export const runMigrations = () => {
+  return Promise.resolve()
+}
+export const revertMigration = () => {
+  return Promise.resolve()
+}
+
+const containerLoader = ModulesSdkUtils.moduleContainerLoaderFactory({
+  moduleModels: {},
+  moduleRepositories: {},
+  moduleServices: ModuleServices,
+})
+
+const loaders = [containerLoader, loadProviders] as any
+
+const service = FileModuleService
+export const moduleDefinition: ModuleExports = {
+  service,
+  loaders,
+  runMigrations,
+  revertMigration,
+}