cursor state to showcase active unit better [bounty: 6 XTR]

[DreadKnight]

When hovering active unit, the cursor should turn into a "progress" type of pointer if there's no ability selected or unit is not a viable target anyway.

[athe-cpu]

Should I only highlight the units on hover if the unit is selectable and not highlight if the unit is not selectable?

[DreadKnight]

@athe-cpu This is about the cursor's state, which should indicate active unit on hover, provided there's no selected ability that can have unit target itself.