Move ui module into bevy_wh_elements #2
Description
This library should not include any handlers or helpers for general UI handling, as that is already taken case of by the bevy_wh_elements UI library. Adding additional utility components and systems here, even if they are just add-ons for other Bevy UI libraries, only adds redundancy. Keeping all the UI code in one place would make organizing everything much easier.
The special UI code blocks, such as the loading screen and main menu components make sense to be kept in WraithLib.