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

ams: deduplicate static initialization logic

settings: fix correctness issue in LazyFileAccessor

strat: always use explicit result namespacing

settings: implement KeyValueStore (#1659) ...

* settings: implement KeyValueStore and dependencies

* settings: update KeyValueStore for recent refactoring

* settings: address feedback

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

sm: reimplement using tipc instead of cmif (probably broken, untested)

htc: implement (fixing linker errors) through HtclowManagerImpl::OpenDriver

sysupdater: implement (untested) rest of the api

pgl: Reimplement the pgl sysmodule (#896) ...

* pgl: add skeleton folder to stratosphere

* pgl: Add service interface for IShellInterface

* pgl: begin skeletoning shell service, implement two commands.

* pgl: Implement three more commands.

* pgl: implement bool tracking commands

* pgl: Implement TriggerApplicationSnapShotDumper

* pgl: implement InitializeProcessControlTask

* pgl: Implement pgl::srv::Initialize

* pgl: Implement main()

* pgl: Implement (Get)ShellEventObserver

* pgl: implement LaunchProgramFromHost, GetHostContentMetaInfo

* pgl: Implement ProcessControlTask

* settings: fix duplicate object name

* pgl: fix minor bugs in impl

erpt: reimplement the sysmodule (#875) ...

* erpt: reimplement the sysmodule

* fatal: update for latest bindings

* erpt: amend logic for culling orphan attachments

ams: revamp assertion system

find -exec sed -i'' -e 's/2018-2019 Atmo/2018-2020 Atmo/g' {} +

meso: skeleton libmesosphere in prep for kernelldr dev

git subrepo clone https://github.com/Atmosphere-NX/Atmosphere-libs libraries ...

subrepo:
  subdir:   "libraries"
  merged:   "07af583b"
upstream:
  origin:   "https://github.com/Atmosphere-NX/Atmosphere-libs"
  branch:   "master"
  commit:   "07af583b"
git-subrepo:
  version:  "0.4.0"
  origin:   "https://github.com/ingydotnet/git-subrepo"
  commit:   "5d6aba9"