Implemented new tool in backend

Backend-libXML/main.py

@@ -19,12 +19,9 @@ def process_xml(request: request, type: str) -> str:
     """Function to process 
 
     :param request: Received request
-    :type request: request
     :param type: Type of needed processing: xsd, xslt or xpath
-    :type type: str
     :raises ValueError: is raised when type is different than those provided above
     :return: response JSON converted to string and response code
-    :rtype: str, int
     """
     start = time.time_ns()
     code = 200
@@ -70,5 +67,10 @@ def xsd():
 def xslt():
     return process_xml(request, "xslt")
 
+@app.route("/prettifypost", methods=["POST"])
+def prettify():
+    request_data = json.loads(request.get_data(as_text=True))
+    return Parser.prettify(request_data['data'])
+
 if __name__ == "__main__":
     app.run()