feat: close behaviour for specific window

[Klemen2]

Currently close behaviour is very limited and cannot be set for specific window. This results in problems with tray icon, where setting WindowCloseBehaviour::LastWindowHides (now DefaultWindowCloseBehaviour::LastWindowHides) will also close the tray icon if windows are not closed in correct order, another option for this issue would be to now set DefaultWindowCloseBehaviour::WindowsHides, but this will result in all windows opening when you click on tray icon which may or may not be intended depending on your app.

With this change it's now possible to:

• change a specific window behaviour on runtime
• set a specific window to exit an app
• set a specific window to hide
  ...

Breaking changes:

• Config.with_close_behaviour is now Config.with_default_window_close_behaviour
• WindowCloseBehaviour is now DefaultWindowCloseBehaviour, WindowCloseBehaviour is now for specific window instead

Tested on windows 11