WIP slab alloc fix

Makefile

cfg/limine.cfg

qemu.mk

src/arch/x86_64/cpu/gdt.rs

src/arch/x86_64/cpu/idt.rs

src/arch/x86_64/cpu/mod.rs

src/arch/x86_64/cpu/tss.rs

src/arch/x86_64/gdt.rs

src/arch/x86_64/idt.rs

src/arch/x86_64/mod.rs

src/boot/limine/mem.rs

src/boot/limine/mod.rs

src/boot/limine/smp.rs

src/main.rs

src/mem/pmm.rs

src/mem/slab.rs

src/panic.rs

src/smp.rs