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.
* mips 2 c basic version, not yet tested
* calling works without crashing, but the function doesn't
* it works
* add test
* cleanup and actually add the test
* dont use mips2c by default for font
* clean up formatting
* fix parent issue
* fix compiler issue
* update
* add error messages
* fix error
* fix array access, temporary
* more clean
* fix
* rename arg variables better
* fix method name
* fix no return value in decompiler
* many small fixes
* cheat types so it works
* name map
* fix old test'
* up to ash
* add more expressions
* fix some return variable usage nonsense
* bfloat print working
* basic-type working
* type working, fix decompiler on all files
* clang format
