Externalize drivers as kernel modules

[juls0730]

Currently, in CappuccinOS, drivers like the keyboard driver and the serial driver are always loaded and in the kernel. These drivers should only be loaded if either, manually called for via something similar to modprobe on Linux, or defined to load based on device detection (or something like this). Of course, this is currently not possible until #6 is complete.

[juls0730]

The first steps have been taken in 5b11feb on the nightly branch, initramfs is loaded, but we will need to write a driver to read data from it. It's also currently just a gzip file when it should probably be an img file that has a simple FS like EXT2.

[juls0730]

see #24