added basic connection between the files, fixed small issues. some parts were achieved using ai.

backend.py

@@ -13,7 +13,7 @@ from datetime import datetime
 from prompt_toolkit import Application
 from prompt_toolkit.completion import WordCompleter
 
-class hafasClient:
+class HafasClient:
     def __init__(self):
         self.session = requests.session()
         self.clientInfo = {"id": "VAO", "name": "webapp", "type": "WEB"}
@@ -90,5 +90,5 @@ class hafasClient:
 
 
 if __name__ == '__main__':
-    client = hafasClient()
+    client = HafasClient()
     client.runTests()