Raider target finding fix

[Krutchen]

Pull req to here, because NoImage says you're going to be maintaining CR and we should use this repo instead.

Fixes raiders being unable to fire at colonists who are "inside", ie behind embrasures inside of a building.
Do note, this is an initial fix, more work is going to be put into it. It can be hit and miss at the moment, but it does enable raiders to fight back.

Before, ranged attacks had to be able to get a path to the target, now they do not, because of my changes within Detour_AttackTargetFinder

Might need to clean it up a little bit in the future, but this is getting the job done so far.

I would like to speak to you regarding further ways to expand this, though, I think that playing with how the GenSight.LineOfSight function works could expand target acquisition further. We could take range into account for raiders "seeing" defenders through embrasures, as at the moment, , and possibly implement a opacity float to allow for "see through" objects, so that mods that add in windows could actually have enemies firing through them, because at the moment, if something isn't "full" in FillPercent, target acquisition happens at the same rate, at the same range, etc.

Expanding upon this could make it so different fill percentages can block sight easier, so the larger the cover is, or more opaque it is, the closer an enemy has to be to see "through" it.

[Krutchen]

Had a quick fix to do really quick, raiders were having some problems firing through embrasures still because I was not calling

Thing result = GenClosest.ClosestThing_Global(searcher.Position, Detour_AttackTargetFinder.tmpTargets, maxTargDist, predicate);
Detour_AttackTargetFinder.tmpTargets.Clear();
return result;

in the edited event, fixed that and removed else statement.