This updates `fmt` to the latest version and moves to just being a copy
of their repo to make updating easier (no editing their cmake / figuring
out which files to minimally include).
The motivation for this is now that we switched to C++ 20, there were a
ton of deprecated function usages that is going away in future compiler
versions. This gets rid of all those warnings.
This sets up the C Kernel for Jak 3, and makes it possible to build and
load code built with `goalc --jak3`.
There's not too much interesting here, other than they switched to a
system where symbol IDs (unique numbers less than 2^14) are generated at
compile time, and those get included in the object file itself.
This is kind of annoying, since it means all tools that produce a GOAL
object file need to work together to assign unique symbol IDs. And since
the symbol IDs can't conflict, and are only a number between 0 and 2^14,
you can't just hash and hope for no collisions.
We work around this by ignoring the IDs and re-assigning our own. I
think this is very similar to what the C Kernel did on early builds of
Jak 3 which supported loading old format level files, which didn't have
the IDs included.
As far as I can tell, this shouldn't cause any problems. It defeats all
of their fancy tricks to save memory by not storing the symbol string,
but we don't care.
This sets out the bones of a Jak 3 build, many things are stubbed out,
guessed, or copied from Jak 2 but it should at least be good enough to:
run `task set-game-jak3`
launch the repl
run builds from the repl
build outputs themselves are untested but the build itself runs without
errors
---------
Co-authored-by: Tyler Wilding <xtvaser@gmail.com>
