MOUSE_MOVE_RELATIVE flag fix

[dvdco]

corrected the MouseFlag.MOUSE_MOVE_RELATIVE in _consts.py updated the inputs.py to use real relative move, rather than getting the mouse position, add delta and abs move now can work better in fps games

precisely:

• Commit message: Fix mouse relative movement error
• This commit changes two files, namely "_consts.py" and "inputs.py". In "_consts.py", the value of the "MOUSE_MOVE_RELATIVE" variable was changed to "0x000" to fix the mouse relative movement error. Additionally, in "inputs.py", the incorrect implementation of "move_relative" was fixed, and the "@requires_driver" decorator was added to ensure that the necessary driver is present for the operation. Also, the scrolling direction error in the "scroll" function was fixed, and the Mouse Move flag "MOUSE_MOVE_RELATIVE" was added to ensure accuracy. Finally, a newline character was added at the end of the "key_down" function.

[kennyhml]

Lets keep this as 0 here because MOUSE_MOVE_RELATIVE just adds to the confusion when the function is not intended to move the cursor,