Support loading kernel and library type information

[mborgerson]

Currently only kernel/library symbol names are provided; however, there is a great deal of knowledge about kernel/library prototypes/data structures that would be very useful to have loaded.

Ghidra appears to have an embedded CParser (of questionable comprehensiveness) that might be able to parse headers.

I have done a bit of work parsing through headers on the kernel side in a prior project here.

Update: I now have this working locally with type information derived from Cxbx-Reloaded, Wine, and OpenXDK. I plan to update ghidra-xbe to ship with these headers so that people can use them out of the box.

wip here https://github.com/mborgerson/xbox-includes