os: implement waitable management. ...

This implements waitable management for Events (and
implements Events). It also refactors PM to use new
Event/Waitable semantics, and also adds STS_ASSERT
as a macro for asserting a boolean expression. The
rest of stratosphere has been refactored to use
STS_ASSERT whenever possible.

strat: go all in on ncm::TitleId

stratosphere: all in on enum class CommandId

ro: refactor/rewrite into sts:: namespace

stratosphere: remove trailing whitespace

stratosphere: more result cleanup

ro: update for R_TRY usage

strat: disable exception handlers when creport would be better

Fix NRO patch offset application

ro: only hold sm session open when needed

ro: add support for applying ips patches to NROs.

ro: fix UnloadNro logic error

ro: implement loadnro/unloadnro

ro: implement rest of LoadNrr/LoadNrrEx

ro: implement UnloadNrr, half of LoadNrr/LoadNrrEx

ro: Implement ro:dmnt

ro: fix typo

ro: skeleton ldr:ro

ro: skeleton ro:dmnt

ro: add ro sysmodule skeleton