This is how the menu looks like after this commit:
┌────┐
│Game│ Help
├────┴─────────────────────────────┐
│ New game F2 │
│ Toggle pause P │
├──────────────────────────────────┤
│ Quit Alt+F4 │
└──────────────────────────────────┘
We have a new, improved string type coming up in AK (OOM aware, no null
state), and while it's going to use UTF-8, the name UTF8String is a
mouthful - so let's free up the String name by renaming the existing
class.
Making the old one have an annoying name will hopefully also help with
quick adoption :^)