feat: added detach decorator

packages/objectsender/src/utils/Decorators.ts

@@ -0,0 +1,13 @@
+import 'reflect-metadata'
+
+const detachMetadataKey = Symbol('detach')
+
+export function Detach() {
+  return Reflect.metadata(detachMetadataKey, true)
+}
+
+export function isDetached(target: object, propertyKey: string) {
+  // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
+  const metadata = Reflect.getMetadata(detachMetadataKey, target, propertyKey)
+  return metadata ? true : false
+}