fix stack getting on linux, add test

diag: fix typo in hos-specific backtrace getter

abort/error: print backtrace, abuse templates, overhaul result/diag (macos not done yet)

remove leftover debug print

libs: add ongoing work to facilitate hactool rewrite

libs: begin adding capacity for doing crypto on generic os (using externally-preset keys)

fs: add just in case bounds checking to linux/macos dirent read

add basic tests for os::Event/SystemEvent functionality

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

erpt: add automatic report cleanup mechanism on boot (closes #1795)

ams_mitm: update to use new NcaFileSystemDriver intf

fs: add Sha256HashGenerator, LZ4 decompressor

fs: revise NcaFileSystemDriver for latest semantics

fssystem: revise allocator logic for latest semantics

fssrv: flesh out the program registry

fssrv: skeleton more program registry logic

fssrv: add skeleton getters for service object sf::SharedPointers

fs: implement newer allocator templates

fssrv: skeleton server manager setup/registration

fs: add skeleton dir for sysmodule code ...

Please note this isn't likely to immediately be the active ams project.

lib: add missing semicolon

Integrate new result macros. (#1780) ...

* result: try out some experimental shenanigans

* result: sketch out some more shenanigans

* result: see what it looks like to convert kernel to use result conds instead of guards

* make rest of kernel use experimental new macro-ing

typofix: boogaloo: electric.

fix typo-bug in HierarchicalSha256Storage::Read

ams: deduplicate static initialization logic

sf/cmif: optimize dispatch table walk to use binary search over linear search

Minor header fixes to reduce parsing issues with Clang (#1700) ...

* Work around Clang's incomplete C++20 support for omitting typename

* vapours: fix Clang error about missing return in constexpr function

* stratosphere: fix call to non-constexpr strlen in constexpr function

strlen being constexpr is a non-compliant GCC extension; Clang
explicitly rejects it: https://reviews.llvm.org/D23692

* stratosphere: add a bunch of missing override specifiers

* stratosphere: work around Clang consteval bug

Minimal example: https://godbolt.org/z/MoM64v93M

The issue seems to be that Clang does not consider f(x) to be a
constant expression if x comes from a template argument that isn't
a non-type auto template argument (???)

We can work around this by relaxing GetMessageHeaderForCheck (by using
constexpr instead of consteval). This produces no functional changes
because the result of GetMessageHeaderForCheck() is assigned to a
constexpr variable, so the result is guaranteed to be computed
at compile-time.

* stratosphere: fix missing require clauses in definitions

GCC not requiring the require clauses to be repeated for member
definitions is actually a compiler bug:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96830

Clang rejects declarations with missing require clauses.

* Fix ALWAYS_INLINE_LAMBDA and parameter list relative order

While GCC doesn't seem to care about the position of the always_inline
attribute relative to the parameter list, Clang is very picky
and requires the attribute to appear after the parameter list
(and before a trailing return type)

* stratosphere: fix static constexpr member variable with incomplete type

GCC accepts this for some reason (because of the lambda?) but Clang
correctly rejects this.

dmnt2: try to avoid writing out of bounds when generating packets

dmnt2: detect thread name, add monitor get mapping(s), increase buffer sizes

dmnt: enable experimental standalone usage of gdbstub, while starlink is in dev