Add basic response factories and helpers

src/http/HTTPError.ts

@@ -0,0 +1,11 @@
+import {ErrorWithContext, HTTPStatus, HTTPMessage} from "@extollo/util"
+
+export class HTTPError extends ErrorWithContext {
+    constructor(
+        public readonly status: HTTPStatus = 500,
+        public readonly message: string = ''
+    ) {
+        super(message || HTTPMessage[status])
+        this.message = message || HTTPMessage[status]
+    }
+}