Implemented showing returned type (#112) (#148)

Co-authored-by: Adam Bem <adam.bem@zoho.eu>
Reviewed-on: #148
Reviewed-by: Mikolaj Widla <widlam@noreply.example.com>

Backend-libXML/main.py

@@ -35,7 +35,7 @@ def process_xml(request: request, type: str) -> str:
         elif (type == "xslt"):
             response_json['result'] = Parser.xslt(data, process)
         elif (type == "xpath"):
-            response_json['result'] = Parser.xpath(data, process)
+            response_json['result'], response_json['type'] = Parser.xpath(data, process)
         elif (type == "prettify"):
             response_json['result'] = Parser.formatXML(data, True)
         elif (type == "minimize"):