Restore Push-to-Talk checkbox
Redo Hotkeys Settings alignment/positioning

Fixes long strings for both labels (e.g. from locale/ro.txt) and long
key combos (e.g. CTRL+ALT+SHIFT+PGUP with German keyboard layout)

Also both Push-to-Talk hotkeys can now be reset separately
Fix Advanced Settings alignment of "Use Multithreaded Optimizations"
Fix livelock in QSV encoder when QSV fails to process frames

When QSVHelper.exe gets stuck the surfaces are never released, hence
idle_tasks remains empty
Update to 0.632
Remove the word hotkey from all strings related to hotkeys

Because they have now their own section in the obs settings.
Fix Push-to-Talk Hotkey 2 binding
Implement Profiles in menu only

I have implemented the same menu as scene collections

- New
- Duplicate
- Rename
- Remove
- Import
- Export

I have removed the Add/Rename/Remove from settings general. I have left
the profile combo box because it is still useful when a user wants to
switch to a different profile while in settings.