Add the ability to change the required amount of X for comets

[SuperHackio]

This applies to the Purple Coins comet (meaning you could set to need more or less than 100) and Romp comets (ExterminationSwitchPowerStar as a whole).

For purple coins, this would be a ScenarioSetting, and the Romp counter would be an automatic detection.

[chendeni]

This would be so useful! It would add more flexibility to Romp comets, especially since ExterminationSwitchPowerStar can detect things other than enemies like breakable objects and collectibles.
The final challenge of the mod I am making will have 200 purple coins.
Is there a limit to the amount of purple coins? Is it possible to have 500 purple coins?