spl: refactor for accuracy/move into libstrat

os: add FlushDataCache

strat: use m_ for member variables

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

strat: refactor address taking of form &var[...]

strat: always use explicit result namespacing

settings: implement KeyValueStore (#1659) ...

* settings: implement KeyValueStore and dependencies

* settings: update KeyValueStore for recent refactoring

* settings: address feedback

sm: remove apm:p compatibility hack ...

Homebrew which would hang when doing this were compiled with libnx < 3.0.0.

Homebrew which is compiled with < 3.0.0 cannot send messages to sm, because
of the incorrect serialization problem (which required homebrew recompile when
12.0.0 released).

Thus, there is no case where this makes a difference.

ams.mitm: avoid using std::unordered_map, it manifests exception code

jpegdec: save 128KB of memory

strat: use ams::Main() instead of main(argc, argv)

strat: build sysmodules with -Wextra/-Werror

svc: refactor/rename MemoryInfo fields

ro: double whoops

ro/dmnt: fix process address space detection

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

strat: use sf::NativeHandle for ipc templating

strat: prefer os::NativeHandle to Handle/svc::Handle where sensible

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

ro: simplify program id logic

pm/cfg: simplify initial process id range logic

strat: automatic program id detection

os: adopt multiwait naming over waitable

pm: implement newer-N-pm's dynamic resource logic

stratosphere: use SdkMutex/SdkRecursiveMutex over Mutex

ams-libs: AMS_ASSERT no longer invokes expression

stratosphere: grant access to SynchronizePreemptionState

fs.mitm: fix memory leak in romfs build (closes #1031)