Memory Stuff and General Fixes

Currently working on the PMM and VMM a little more, also cleaned up the main for better readability.
I also moved the PMM and VMM into the mm subsystem of the KState struct.

Additionally, I switched from rust 2021 to rust 2024, which also needed a little fixing to get working again. Why? Well to use let chains in if statements of course cause its like a little bit nicer to write! :)

Also, I partially upgraded scripts/x86_64/build.py to log to a log file and restore your terminal config on termination.

Currently working on getting a bug in the PMM fixed, getting bootloader memory reclaim to work and then I’ll do the VMM’s VMAs.