Add interrupts and IDT and react to double, page, general prot faults

and breakpoints, add keyboard support through the keyboar interrupt, add
paging memory management and a Frame Allocator, add a generic arch
module that initializes arch-specific things, fix framebuffer and
serialconsole being accessed from multiple places, move serial to driver
since its not actually a serial console.

kernel/src/driver/mod.rs

@@ -1,3 +1,4 @@
 pub mod graphics;
 pub mod keyboard;
+pub mod serial;
 pub mod timer;