Replaces `std::shared_pointer` with `stx::atomic_ptr` and `stx::shared_ptr`.
Notes to programmers:
* This pr kills the use of `dynamic_cast`, `std::dynamic_pointer_cast` and `std::weak_ptr` on IDM objects, possible replacement is to save the object ID on the base object, then use idm::check/get_unlocked to the destination type via the saved ID which may be null. Null pointer check is how you can tell type mismatch (as dynamic cast) or object destruction (as weak_ptr locking).
* Double-inheritance on IDM objects should be used with care, `stx::shared_ptr` does not support constant-evaluated pointer offsetting to parent/child type.
* `idm::check/get_unlocked` can now be used anywhere.
Misc fixes:
* Fixes some segfaults with RPCN with interaction with IDM.
* Fix deadlocks in access violation handler due locking recursion.
* Fixes race condition in process exit-spawn on memory containers read.
* Fix bug that theoretically can prevent RPCS3 from booting - fix `id_manager::typeinfo` comparison to compare members instead of `memcmp` which can fail spuriously on padding bytes.
* Ensure all IDM inherited types of base, either has `id_base` or `id_type` defined locally, this allows to make getters such as `idm::get_unlocked<lv2_socket, lv2_socket_raw>()` which were broken before. (requires save-states invalidation)
* Removes broken operator[] overload of `stx::shared_ptr` and `stx::single_ptr` for non-array types.
* Return EFSSPEIFIC if encountered corrupted EDAT or an unmatched key in sys_fs_open and sys_fs_read.
* Fix validate_dev_klic() for license-free EDAT.
* Fix EDATADecrypter::ReadData() for when size + pos > file_size but pos < file_size.
* Try to save up to 16 decryption keys. Educated guess based on NPDRM file descriptors count llimit.
* Return LICENCE_NOT_FOUND if needed RAP file is not found in sceNpDrmIsAvailable.
* Check additional sys_fs_open errors for sceNpDrmOpen. (EISDIR, ENOTMOUNTED)
* Install PS3UPDAT.PUP at the spot when booting games whenever firmware is missing. The option to boot games without firmware is still supported when all firmware SPRX are HLEd in firmware settings.
* Pop-up a confirmation dialog in firmware installation if firmware is already installed.
