* Use atomic waitables instead instead of global thread wait as often as possible.
* Add ::is_stopped() and and ::is_paued() which can be used in atomic loops and with atomic wait. (constexpr cpu flags test functions)
* Fix notification bug of sys_spu_thread_group_exit/terminate. (old bug, enhanced by #9117)
* Function time statistics at Emu.Stop() restored. (instead of current "X syscall failed with 0x00000000 : 0")
* Set the ground for RSX modes of register editor and insttruction editor, do not use shared ptrs directly.
* Make register editor and instruction editor modeless to allow to copypaste values from thread context etc in the background.
* Remove m_current_choice, it's not correct to rely on thread name entry. In extreme corner cases a newly thread can be created, old destroyed with the same entry name. (reoccuring LV2 SPU/PPU ID)
* Remove m_no_thread_selected, can be easily replaced with std::weak_ptr expired() function and is more accurate this way.
* In HandleBreakpointRequest: only remove breakpoint on valid PPU thread and not any thread! also fix potential nullptr deref if thread has recently been destroyed.
* SPU Debugger: Fix try_get_insert_mask_info
* Debugger: Always update thread state on context's data change
No longer needing to press on thread's instructions for actions to work!
A few more items:
Standardising on 'OK' for all base language uses (rather than 'Ok', or 'Okay').
It's perceived as the 'most correct' variant, and importantly having a single variant is best from a translation perspective.
Added plurality handling for multiple PPU caches created.
Added plurality handling for multiple items deleted in save manager.
Capitalised trophy grade to align with Sony terminology.
Brought trophy name position into translatable string (for languages that might really want to deviate from SVO)
