Additional UI Changes

NEW UI UPDATE

This new UI update provides more options and buttons to mess around with and use. It makes the game more accessible and easy to use overall.

Changes:

- Added Pause Menu. Press [Esc] to use it.

- Added a Level Select Menu that can be accessed from the main menu.

- Froze the Z and Y rotation of the cube so that it no longer turns while playing the game, even while you have not hit an obstacle. Will unfreeze when you hit an obstacle.

- Slightly better tutorial. It no longer shows on the main menu but will instead show up on the first level.

- Bug fixes (I guess).

Comment down what you need to have changed and what other bugs there are.