ams: prefer construct_at/destroy_at over placement new/explicit destructor

ams: remove TYPED_STORAGE() macro in favor of template

[tma2] [Ongoing] Continue implementing modules for tma2. (#1388) ...

* cs: add stub sysmodule to host command shell server

* cs: implement logic for main (linker error paradise, for now)

* cs: implement more of the system module's skeleton

* htcs: update client type names for libnx pr merge

set.mitm: fake compatibility for usb!usb30_force_enabled on 9.0.0+ (#1391) ...

* set.mitm: fake compatibility for usb!usb30_force_enabled on 9.0.0+

* set.mitm: add value meaning comment for usb!usb30_force_enabled

* loader: pretend to be polite about patch ordering

tio: fix wrong body size on optimized ListDirectory

tio: fix bug in body receive

tio: implement SdCardObserver (finishes sysmodule)

tio: implement all command processor logic

tio: implement server/dispatch logic.

tio: add stub sysmodule to host target io server

htc: disable socket driver, needs design thought before we can turn it on for real.

htc: implement socket driver (socket api not really impl'd yet)

htc: configure usage via system setting

htc: fixes, can now enter ReadyState with wip starlink code

htc: finish last code for Main()

htc: add htcfs server/service object skeletons

htcs: add hipc server/service object skeletons

htc: ObserverThread (mostly), system now boots + works with htc in bg

htc: implement psc/pm loop

htc: hook up creation of the htc manager service object

htc: module id names, skeleton rest of main

rapidjson: add customization point for allocation/asserts

htc: skeleton some more of main

htc: skeleton main file/sysmodule dir

kern: alleviate a little KPort pressure.

sm: fix abort on RegisterService while at port limit ...

closes #1382

dmnt: set the debug process handle slightly more carefully

fs.mitm: fix cache of non-current-process data storages (closes #1371)

dns.mitm: allow nullptr for port string (closes #1352)

dns.mitm: fix hosts file parsing bug