Update validate static function

tubot/static/functions.py

@@ -8,12 +8,14 @@
 from tubot.static.abc import IValidatable
 
 
-async def validate(obj: IValidatable) -> bool:
+async def validate(obj: IValidatable, msg: str | None = None) -> bool:
     """
-    Checks the validity of the object
+    Throws an exception if the object has not been validated
 
     :return: Object validity boolean
     """
     if await obj.__validate__():
         return True
+    if msg is None:
         raise TypeError("Object validation failed")
+    raise TypeError(f"Object validation failed: {msg}")