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 :^)
ProcessInspector is an abstract base class for an object that can
inspect the address space of a process.
Concrete sub classes need to implement methods for peeking & poking
memory and walking the loaded libraries.
It is currently only implemented by DebugSession.