* First pass at making UI with UIToolkit
* UI Pass
* Final pass on UI for 2D Space Shooter--new buttons, new sanitized input fields, new in game UI for player and power ups, and an overall logic pass to hook everything up
* Quick fix to make the other players' UI follow their ships
* Added a sorting group component to the ships so that there's no weird clipping overlap between two ships
* Iteration of visuals of the UI, going for more of a scifi look and reusing assets to increase cohesion
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