Fix input setup function when copying character to different project

[FelixJons]

Fixed the function that is used to register the required input actions when the character has been copied to a different project. The previous code sent INPUT_ACTIONS[action] as the second argument to action_add_events() , which was read as an int. The new code instead creates a new local InputEvent with the associated Key enum instead.

[NathanLovato]

Thanks much!