Add timezone option for HA Addon

src/main.py

@@ -1,10 +1,12 @@
 from volvo import authorize
 from mqtt import update_loop, connect
 from const import VERSION
+from util import set_tz
 
 
 if __name__ == '__main__':
     print("Starting volvo2mqtt version " + VERSION)
+    set_tz()
     authorize()
     connect()
     update_loop()