Verify a touchpad is present before polling it for input. Without this
check the Debug log is spammed with the message "error: Parameter
'touchpad' is invalid" if you have a controller without a touchpad.

One would think every touchpad supports at least 1 finger, but in case
there's some weird edge case check the finger count to be sure.

Update clang-format to version 19

InputCommon: Move SDL Device class into its own cpp/h files.

find ./Source/ -name '*.cpp' -o -name '*.h' | xargs clang-format-19 -i

Android: Don't use separate thread for MotionAlertDialog

This is an Android continuation of bc95c00. We now call
InputDetector::Update immediately after receiving an input event from
Android instead of periodically calling it in a sleep loop. This
improves detection of very short inputs, which are especially likely to
occur for volume buttons on phones (or at least on my phone) if you
don't intentionally keep them held down.

Ranges Algorithms Modernization - Projection