If the percentage is 100, we were trying to get the heat gradient pixel
at (100, 0), which was one pixel past the end. Fix this by making the
heat gradient 101 pixels wide :^)
* AK: Add formatter for JsonValue.
* Inspector: Use new format functions.
* Profiler: Use new format functions.
* UserspaceEmulator: Use new format functions.
From a layering perspective, it's maybe a bit surprising that the
X86::SymbolProvider implementation also lives in LibX86, but since
everything depends on LibELF via LibC, and since all current
LibX86-based disassemblers want to use ELFSymbolProvider, it makes
some amount of sense to put it there.
