F3 Is My Shawty

Adds a new config, "cacheEnabled," enables us to cache the current text and render it until something changes.

Two new profiler sections have also been added, "cacheComparison" for the actual check if the new text and the old text are the same, and "cacheMiss" for the proper update if they aren't the same.

"cacheComparison" is around 2 percent of "debugScreen", so it is not much, but you can always disable it if the need arises.