feat(medusa): Cache modules (#3187)

packages/cache-inmemory/src/index.ts

@@ -0,0 +1,13 @@
+import { ModuleExports } from "@medusajs/modules-sdk"
+
+import InMemoryCacheService from "./services/inmemory-cache"
+
+const loaders = []
+const service = InMemoryCacheService
+
+const moduleDefinition: ModuleExports = {
+  service,
+  loaders,
+}
+
+export default moduleDefinition