Remake Kernel Scheduling, CPU Management & Boot Management (Prometheus)

ldr: Cleanup NRO & NRR structs

ldr: Update NRR/NRO structs

grc: Update function table

lbl: Update function table

ldn: Update function table

mig: Update function table

mm: Update function table

ncm: Update function table

nfc: Update function table

friend: Update function table

General: Tune the priority of main emulation threads so they have higher priority than less important helper threads.