Save GUI layout within the campaign file

[Purzelkater]

Is your feature request related to a problem? Please describe.
Setting up the GUI was the most complicated task for my new players. They could simply install MapTool, start it and connect to the server. But then I had to explain step by step which windows they not need as players (clients) - like tables, library or gm macros - and how they can close them. Then I had to explain which windows are needed - like campaign (macros) - and how they can move and dock this windows and what's the best layout for the current campaign.
Yes, it is a one-time task, but it has to be done again for each framework you connect (even if you switch through multiple frameworks).

Describe the solution you'd like
Save the current GUI layout within the campaign file and restore it, if a client will be connected. Even better, if the layout can be different for players and gm. Maybe the possibility to ask clients to use the campaign default GUI layout.

Describe alternatives you've considered
An function to open/close windows with macro functions - like openWindow("initiative") or closeWindow("tables"). If possible, some docking/moving commands would be nice.

[Tdue21]

This is an excellent suggestion. I second it :)