fix: conversion for port number

Author: Federico Bregant

can/util.py

@@ -211,7 +211,16 @@ def _create_bus_config(config: Dict[str, Any]) -> typechecking.BusConfig:
         raise CanInterfaceNotImplementedError(
             f'Unknown interface type "{config["interface"]}"'
         )
-
+    if "port" in config:
+        if isinstance(config["port"], str):
+        	if config["port"].isnumeric():
+        		config["port"] = int(config["port"])
+        		if not 0 < config["port"] < 65535:
+        			raise ValueError("Port config must be inside 0-65535 range!")
+        	else:
+        		raise ValueError("Port config must be a number!")
+        elif not isinstance(config["port"], int):
+        	raise TypeError("Port config must be string or integer!")
     if "bitrate" in config:
         config["bitrate"] = int(config["bitrate"])
     if "fd" in config: