Reinforcements - Boats should be smarter about LZ's and unit types

[astruyk]

If the player places the unit water that is close to shore, we should try to get the boats to generate a move waypoint that is at the shore itself so units can unload quickly (especially true for zodiacs).

If the player places the LZ further away (far enough that the units can't swim), the board should be populated with scuba troops instead of regular infantry.

Maybe we can use https://community.bistudio.com/wiki/BIS_fnc_findSafePos to try to find a place closeby that is shore. If none is available and the LZ is over water ( https://community.bistudio.com/wiki/surfaceIsWater ) then use scuba troops and behave as normal. Otherwise the LZ is inland we should use normal troops and try a larger search for safe shorline - if none is found, then maybe just give up and place the WP as normal. I'm not sure how the boats will behave in this case

[astruyk]

Moving out of scheduled milestones. When I was playing around with boat LZ's I couldn't get them to drop troops in the water anyways (they would attempt to drive to the land even if the WP was way out so sea). Needs more investigation into an altenrate way to get them to drop the scuba units over water.