UI Bugfixes

Refactor UI to use a hierarchy system rather than the current single state tracker.
Also, fix the following bugs:
* Opening settings and clicking UI ends current dialogue, and breaks future dialogue interactions. (Hotfixed)
* Time does not pause during pause menu. (Hotfixed)
* Pressing resume in pause menu, while next to NPC triggers dialogue
* Add a confirmation to the title screen button (see [UI Figma](https://www.figma.com/design/20gnE1YNFdm5Syun3w4azV/UI-Mock-Ups?node-id=0-1&t=jskSlbWuXrQAYaQ5-1))
* Change inventory bar to one row of items. Rn you can scroll to an invisible second row and mess up the UI.
* When presenting item and sometimes in dialogue selection is lost!

Remember to update the [Bug Tracker](https://docs.google.com/spreadsheets/d/1CQFJGLH1agWWKN4MZGLViY3ZdPrpycQMa5zxeHBTv94/edit?usp=sharing) when you're done.