added ics support. and some thread safety

main.py

@@ -1,5 +1,6 @@
 from PMT import PMT
 from DB import Database
+from API import Webserver
 from dotenv import load_dotenv
 from time import sleep
 import os
@@ -12,7 +13,7 @@ def main():
     # Set up database, webserver and PMT connection
     db = Database()
     pmt = PMT()
-
+    webserver = Webserver("0.0.0.0", 8080, db)
 
     # fetch PMT shifts
     pmt.login()
@@ -27,5 +28,7 @@ def main():
     db.insert_shifts(shifts)
     
 
+    webserver.run()
+
 if __name__ == "__main__":
     main()