Avoids the use of the null pointer to represent an empty string.
Instead, we can simply pass an empty string_view instance. Using
std::string_view enforces this invariant at the API level.
Begins the transition to using fmt for string formatting where
applicable. Given fmt supports formatting std::string instances out of
the box, we can remove now-unnecessary calls to .c_str() and .data().
Note that this change does not touch the actual logging subsystem aside
from converting the final StringFromFormat call in the process over to
fmt::format. Given our logging system is heavily used throughout the
entire codebase, and converting that over will be quite a large change
by itself, this will be tackled near the end of the conversion process.
This moves the Gekko disassembler to Common where it should be. Having it in the Bochs disassembly Externals is incorrect.
Unlike the PowerPC disassembler prior however, this one is updated to have an API that is more fitting for C++. e.g. Not needing to specify a string buffer and size. It does all of this under the hood.
This modifies all the DebuggingInterfaces as necessary to handle this.
