Input - Separate device logic that requires MetaCode deltas and logic that doesn't.

[MakoEnergy]

Currently Input devices have a singular update method that performs all of the update logic. During the more recent refactor of the system I tried to add an early escape in the event that no new inputs were detected, however this broke some device behaviors (such as resetting the mouse wheel state).

Some devices have updates that need to be performed regardless, but we shouldn't have to pay for all the other checks involved when updating with MetaCodes when none exist. So the two forms of logic should be separated somehow and we should have an early out when no MetaCodes are detected that frame.

InputManager::UpdateInputDevices() has a todo commenting on this issue.