Add elf files

Paging constructs completed, remap kernel before jumping to kmain
Panic will do a stack trace
Remove SSE from none target

We add lookup table for interrupt descriptions containing information
about the CPU exceptions etc.

This minicommit introduces two newtpyes, `Physical` and `Virtual`,
respectively. These serves as a way to segregate the different forms of
addresses to avoid the issues we had in the old kernel.