chore(): Reorganize modules (#7210)

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

packages/modules/link-modules/src/services/dynamic-service-class.ts

@@ -0,0 +1,22 @@
+import { Constructor, ILinkModule, ModuleJoinerConfig } from "@medusajs/types"
+import { LinkModuleService } from "@services"
+
+export function getModuleService(
+  joinerConfig: ModuleJoinerConfig
+): Constructor<ILinkModule> {
+  const joinerConfig_ = JSON.parse(JSON.stringify(joinerConfig))
+  delete joinerConfig_.databaseConfig
+  return class LinkService extends LinkModuleService<unknown> {
+    override __joinerConfig(): ModuleJoinerConfig {
+      return joinerConfig_ as ModuleJoinerConfig
+    }
+  }
+}
+
+export function getReadOnlyModuleService(joinerConfig: ModuleJoinerConfig) {
+  return class ReadOnlyLinkService {
+    __joinerConfig(): ModuleJoinerConfig {
+      return joinerConfig as ModuleJoinerConfig
+    }
+  }
+}