fix datatree sub and unsubscribe at tree

src/models/Response.ts

@@ -7,5 +7,6 @@ export type Response = {
   get?: Gets;
   set?: Sets;
   subscribe?: Subs;
+  unsubscribe?: Subs;
   publish?: Pubs;
 };

src/models/Subscribe.ts

@@ -1,6 +1,6 @@
 export type Subscribe = {
-  uuid?: string;
-  path?: string;
+  uuid?: string | undefined;
+  path?: string | undefined;
   depth?: number;
   value?: string | number | boolean | undefined;
 };