Melvor Speed per mac-chaffee

This is an extension for the game Melvor Idle (https://www.melvoridle.com/) which helps perform speed runs of the game. Features include a timer, automatic starting/stopping/splitting, split "presents" for different run types, and time-advancing cheats for run types that allow it.

The timer will appear in the header bar. Settings can be accessed in the game's sidebar underneath the real settings icon.