Migrate to dynamic saving for all TT settings

[CoBC]

We are currently implementing some new settings which are saving dynamicly, it's, for example, the case for new TTS customization introduced by a recent PR, so, when we navigate TTS events list, if message has changed, the new message is automatically saved.
However, some preferences are still saving only when pressing "OK" button in preferences dialog.
More and more apps are switching to dynamic saving for all settings.
So, what do you think, should we switch TT settings to dynamic saving, E.G. when you check a checkbox, setting is automatically saved in config file.
If we implement this change, the preferences dialog will don't have OK and Cancel buttons anymore but just a Close button instead.
Another option is to change this new settings to stop dynamic saving and save all changes when closing dialog