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
* set up types
* cleaned up type analysis and got things working through atomic ops
* expression working, need types
* improved types and names
* getting close
* finish up dma-disasm
* fix
