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>

docs/fatal error: update for 0.15.0

kern: perform rescheduling on dispatch re-enable (closes #1169)

kern: minor behavioral fixes to condvar/address arbiter

ams: expose reboot payload for kernel panic

kern: fix KCodeMemory SVCs when Owner process != Generator process

kern: default to release config

kern: generate fatal error on panic

kern: add build-define for logging to iram ringbuffer

kern: lps driver fixes, sleep confirmed working on 1.0.0

kern: fix c/p error

kern: add debug logging on smmu error interrupt

kern: finish 1.x lps driver

kern: add most of 1.x lps driver

kern: skeleton legacy lps driver

exo/kern: 1.0.0 requires access to bpmp smmu regs, userland (am) needs to map bpmp exception vectors

kern: begin 1.0.0 backwards compat changes (kips run, full boot fails)

kern: support 2-pool layout on 2.x-4.x instead of modern 4-pool layout

kern: change terminology metadata -> management

kern: pool management should be within carveout

kern: fix phys/virt pool management mixup

kern: revamp KMemoryRegionType to better encode derivation hierarchies

kern: PMC must be user-mappable for 1.0.0 compat

kern: expose mesosphere meta over GetInfo instead of GetSystemInfo

kern/pm: support for 5.x under mesosphere

kern: fix warn-errors

kern: fix KTypedAddress, strengthen assertions

kern: add version bounds checking

kern: avoid hardcoding maximum board memory size

kern: improve resource region size definitions/calculations