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

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

tma2: include sysmodules in stratosphere.romfs

LogManager: implement system module, client api, logging api (#1617) ...

Some notes:

* Unless `atmosphere!enable_log_manager` is true, Nintendo's log manager will be used instead.
  * This prevents paying memory costs for LM when not enabling logging.
  * To facilitate this, Atmosphere's log manager has a different program id from Nintendo's.
  * `atmosphere!enable_htc` implies `atmosphere!enable_log_manager`.
* LogManager logs to tma, and the SD card (if `lm!enable_sd_card_logging` is true, which it is by default).
* Binary logs are saved to `lm!sd_card_log_output_directory`, which is `atmosphere/binlogs` by default.

build: fix building with directory existing

ams: docs/build update

build: fix clean target

stratosphere: remove 0.19.0 update cleanup logic.

fusee: fix buildsystem, rename secondary -> package3

ams: bump version to 0.20.1

fusee: restore DRAM to 204MHz before starting main cpu on Mariko (closes #1600). ...

Nintendo's Mariko tables result in trained frequency of 1599999 instead of 1600000.

PCV checks for rate == 1600000 exactly, when doing EMC init.

Thus EMC init does not succeed if we are trained to 1600000.

PCV has a fudge factor of 1000 used in SetEmcDvfsFreq, but this is not used in InitEmcDvfs.

This failure means that PCV cannot change rate back to 204MHz before sleep, and then after
wake extremely degraded performance is observed.

Restoring DRAM to 204MHz before boot causes EMC init to succeed/fixes performance degradation.

ams: replace sept with tsec firmware (#1594) ...

* ams: replace sept with tsec firmware

This replaces sept with a custom tsec key derivation firmware.

NOTE: This does not use any TSEC exploits whatsoever; it is a well-signed
TSEC binary assembled with envyas and signed with the real cauth key.

For more details, contact SciresM#0524.

* fusee: only set SBK if it's readable

build: use DWARFv4 explicitly for IDA compatibility with debug elfs

boot2: clean up pre-0.19.0 ams contents on upgrade

ams: distribute sysmodules in single file as stratosphere.romfs

ams: add kernel to debug elf zip

ams: update Makefile to build zips with new names

ams: use default bct0 by default

strat: add new npdm field

fusee: integrate mariko fatal.

ams: fix building debug elf zip

ams: build experimental zip in addition to standard one

Update makefile

ams: distribute daybreak in release zips

ams: update zip to include exosphere.ini template

exo2: rename exosphere2 -> exosphere

fusee: switch to use exo2 instead of exo1

refactor jpegdec implementation into libstrat (thanks again, Behemoth!)

jpegdec reimplementation (#912) ...

* add jpegdec reimplementation

* reduce work memory

* fix color space

* jpegdec: cleanup results to use atmosphere style

* fix outdated comments, correct do/while bug

Co-authored-by: Michael Scire <SciresM@gmail.com>

ncm/build dist: minor fixes