ams_mitm: implement bpc:mitm

strat: update for latest libnx.

ams_mitm: begin skeleton refactor

sf: explicitly namespace in DEFINE_SERVICE_DISPATCH_TABLE

sf: fixes (basic mitm service functionality now confirmed working)

libstrat: implement mitm server registration

strat: TitleId -> ProgramId, titles->contents

strat: fixes for compat with latest libnx

sf: PrepareForErrorReply is common to all objects

libstrat: enable lto

strat: split out common functionality for future meso use

namespace sts -> namespace ams ...

namespace sts::ams -> ams::exosphere, ams::.

This is to facilitate future use of ams:: namespace code in
mesosphere, as we'll want to include ams::util, ams::result, ams::svc...

Results: Implement namespaced, type-safe results. ...

Because I was working on multiple things at once, this commit also:
- Adds wrappers for/linker flags to wrap CXX exceptions to make them
  abort. This saves ~0x8000 of memory in every system module.
- Broadly replaces lines of the pattern if (cond) { return ResultX; }
  with R_UNLESS(!cond, ResultX());.
- Reworks the R_TRY_CATCH macros (and the result macros in general).

libstrat: fix domain issues. in/out objects now work.

sf: implement mitm forwarding + domains.

libstrat: namespace remaining non-namespaced code. more new-ipc updates

boot: reduce memory footprint

boot2: move to separate process

strat: statically allocate additional threads

strat: update for latest libnx commit

dmnt: update for new-ipc

creport: update for new-ipc

fatal: update for new-ipc

boot: update for api changes

spl: update for new-ipc (fixes two bugs in sf)

sf-impl: remove debug condition

pm: statically allocate more resources to save memory

pm: update for new-ipc

ldr: fix copy/paste, only 1 ldr:pm session needed

loader: update for new-ipc