loader: update for 20.0.0/21.0.0

ldr/pm: update for 20.0.0 abi changes

strat: ldr::PlatformId -> ncm::ContentMetaPlatform

kern/ldr: add support for --x executables

loader: update to reflect latest 18.0.0 changes ...

well, this sure is late, whoops

os: update os namespace for 15.0.0, loader/ro: update to use csrng, spl: bump max sessions

loader: update for changes in 14.0.0

loader: use os apis for interacting with process memory

ams: use R_SUCCEED, R_THROW globally

ams: support building unit test programs on windows/linux/macos

strat: add missing semicolon

Integrate new result macros. (#1780) ...

* result: try out some experimental shenanigans

* result: sketch out some more shenanigans

* result: see what it looks like to convert kernel to use result conds instead of guards

* make rest of kernel use experimental new macro-ing

loader: refactor to remove fake namespaces

loader: refactor ro manager/improve accuracy

ams: replace most remaining operator & with std::addressof

strat: always use explicit result namespacing

strat: build sysmodules with -Wextra/-Werror

svc: refactor/rename MemoryInfo fields

strat: remove map namespace, svc: add address space defs

strat: use svc:: over ::svc

ams: the copyright^H^H^H^H^H^H^Hmplex plane is the algebraic closure of the reals

os: remove ManagedHandle, refactor to use NativeHandle typename

LogManager: implement system module, client api, logging api (#1617) ...

Some notes:

* Unless `atmosphere!enable_log_manager` is true, Nintendo's log manager will be used instead.
  * This prevents paying memory costs for LM when not enabling logging.
  * To facilitate this, Atmosphere's log manager has a different program id from Nintendo's.
  * `atmosphere!enable_htc` implies `atmosphere!enable_log_manager`.
* LogManager logs to tma, and the SD card (if `lm!enable_sd_card_logging` is true, which it is by default).
* Binary logs are saved to `lm!sd_card_log_output_directory`, which is `atmosphere/binlogs` by default.

ams-1.0.0: meso no longer optional, remove conditional logic

set.mitm: fake compatibility for usb!usb30_force_enabled on 9.0.0+ (#1391) ...

* set.mitm: fake compatibility for usb!usb30_force_enabled on 9.0.0+

* set.mitm: add value meaning comment for usb!usb30_force_enabled

* loader: pretend to be polite about patch ordering

util::unique_lock, update loader to new sf semantics

loader: fix process handle management on create process error

loader: support 11.x DisableDeviceAddressSpaceMerge

loader: update for 11.0.0 (anti-dg + set program args abi)

ldr/hbl: support address space width overrides