Added better http error code in rest api

src/deps.ts

@@ -1,3 +1,5 @@
+// deno std
+
 export { Buffer, StringReader } from 'https://deno.land/std@0.191.0/io/mod.ts';
 export {
     iterateReader,
@@ -7,4 +9,7 @@ export {
     readerFromStreamReader,
     TextLineStream,
 } from 'https://deno.land/std@0.191.0/streams/mod.ts';
+export {Status} from "https://deno.land/std@0.191.0/http/http_status.ts";
+
+// oak
 export { Application, Context, Router } from 'https://deno.land/x/oak/mod.ts';