kern: avoid constexpr init for many objects (avoids unnecessary memory clear) (#1668)

lr: fix EraseRedirection hang introduced by refactoring

ams: improve offsetof style consistency

constexpr: resign ourselves to gcc dropping void -> T support

powctl: remove unused arm_neon header after last commit

powctl: don't require arm64 arch for floating -> fixed conversion

tipc: implement special-case templating used by 13.0.0 pgl

boot: update for 13.0.0/aula parameter changes (closes #1477)

powctl: integrate 13.0.0 changes (aula params not done yet)

strat: fix some mitm server management logic

sm/tipc: minor cleanup

strat: don't force fs globals to link into every process

sf: prevent emitting mitm/defer code unless server in process supports it

ams: allow bootloader to merely approximate correct target firmware

loader: refactor ro manager/improve accuracy

spl: refactor for accuracy/move into libstrat

os: add FlushDataCache

strat: use m_ for member variables

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

settings: fix correctness issue in LazyFileAccessor

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

os: fix mutex push/pop prototypes

cs: prevent exceptions from manifesting

boot: save 12KB

erpt: save 8KB

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

strat: build sysmodules with -Wextra/-Werror

libstrat: fix compilation without pre-compiled header/without lto