kern: update initial cache management to match latest kernel

kern: load initial process binary from user pool, rather than from pt heap

kern: swap tpidr_el1/cntv_cval_el0 as scratch vs exception stack

kern: update KInitialPageTable/KInitialPageAllocator

kern: remove target-firmware logic for kernel loader

kern: implement thread call stack debug

kern: update Initialize0 to account for new ordering

kldr: update for 11.0.0

Meso build targets (#1196) ...

* meso: commit wip (thanks fincs) rewrite to support build targets

* meso: commit mostly-working build system

* meso: correct .o dependencies in kernel/kldr

* libstratosphere: fix building after PCH related build changes

Co-authored-by: fincs <fincs@devkitpro.org>

kern: improve resource region size definitions/calculations

kern: make GetTargetFirmware a compile-time constant when not building for Switch

kern: fix multicore instruction cache invalidation

kern: fix built-in usage for libc

ams: update build system to add generic-fallback support

kernel_ldr: use unoptimized memcpy before mmu bringup (closes #1102) ...

Before the MMU is up, all reads/writes must be aligned; the optimized
memcpy implementation does not guarantee all reads/writes it performs
are aligned.

This commit splits the libc impl to be separate for kernel/kernel_ldr,
and so now only kernel will use the optimized impl. This is safe,
as the MMU is brought up before kernel begins executing.

kern: clean up majority of TODOs

kern: switch memset to optimized impl

kern: retrieve target firmware from exosphere instead of hardcoding

kern: Support older SVC ABIs

kern: Prepare to commit cardinal sin

ams: revamp target firmware

kern/kldr: fix bugs in physical randomization

kern: implement 10.x perm change, fix many page table bugs

kern: Update init to reflect 10.0.0 changes

ams: fix boot sysmodule/kernel for 10.0.0

kernel_ldr: update to support 10.0.0

kern: implement interrupt thread init

kernel_ldr: fix consistency on hardware

libmesosphere: move .s to kernel (prevent manifesting in kernelldr)

kern: implement dynamic slab init + ini relocation