Better custom size levels mod

Hello, I made a quick improvement to the Custom Size Levels mod since a lot of players like it. You no longer need to edit files on your computer to change the size levels. When you enable this mod, a custom UI will appear when you launch the game where you can directly change the amount in centimeters that your giantess can grow. A quick warning : putting values too high such as 10 kilometers can cause massive lags for now.