Added name attribute to CTkButton, CTkFrame and CTkBaseClass

[octimot]

The name attribute is super useful when dealing with multiple windows and/or observer patterns, since it's the cleanest way to update widgets from different objects/functions etc. using nametowidget()

I would recommend adding this attribute back to all the widgets, if possible.

This was mentioned multiple times, including #419 #422 #961 etc.

I find my proposed method the easiest to implement.

Is there any reason to avoid this?

[nihauc12]

@TomSchimansky sry to ping but any chance this could get merged in a future version ? This would be really usefull