[FEATURE] UI Beautify

## 💡 Feature Description
Find a nice looking pixel art ui kit on [Open Game Art[(https://opengameart.org/) or any other site and apply it on the pause menu and main menu.

## 🎯 Goal / Problem Solved
Improve the looking. 

## 🧩 Alternatives Considered
Another alternative is to make the artists do all the work, but don't because ui resources are plenty and artists are busy. 