More options for mouse speed movement

[AdrianSimionov]

While a generic option makes the movement more human-like, the speed is different when moving mouse over a long distance compared to moving the mouse for a short distance.

A feature where the speed is kept constant and can be set to a constant value, would be greatly appreciated.

[AdrianSimionov]

Currently, when not using option "-e" the mouse moves at a fixed hard-coded speed, let's say X.

Add an option called "-s", which when passed, is changing the hard-coded value of X to a new value as provided by the "-s" option.