InputCommon: return the device list directly in GetAllDevices

This fixes https://bugs.dolphin-emu.org/issues/14076. The issue report
more or less already says it all, but to provide a shorter summary:
We were fetching a list of vibrator IDs, but instead of passing the
vibrator ID to the vibrator manager, we passed the index of the ID in
the list. This happened to work fine on many devices, including all
devices that use DolphinVibratorManagerCompat, due to the only Vibrator
having both an index and ID of 0. But on some devices, it failed due to
the ID of the Vibrator being 1.

This fix makes us correctly pass the ID to the vibrator manager. We
still use indices in controller INI files, both for compatibility with
the controller mappings shipped with Dolphin (which use index 0) and for
backwards compatibility with older controller INI files.

Accomplished using `run-clang-tidy` with `performance-move-const-arg,performance-unnecessary-value-param,modernize-pass-by-value`.

Changed arguments to const references, removed them where inappropriate (e.g. sink parameters). Same with std::move.

Manually reviewed each change to make sure that it makes sense, and do something more appropriate if possible.

Core: Add SDL Hints settings

Signed-off-by: Andrew Strauss <astrauss11@gmail.com>