Added AntiShipMissile unit class and updated the hy_launcher unit as well as the silkworm layout to differentiate clearly between missile (scud, v1) and antiship (silkworm)
fixes#2159
- Generalize Hawk, Rapier, Roland, SA-2, SA-3, SA-11, HQ-7, NASAMS
- One layout miz with 6 Launchers
- Two general layout yamls for 6 and 4 Launchers using the same miz
- Split up the SHORAD layout (one with TELAR units and one with Track Units)
- The SA-8 LD unit hat the SA-13 unit name as variant. The Layout tried to create a SA-13 SHORAD Site but actually used an SA-8 LD unit instead with zero threat range. This resulted in a yellow marked GroundObject on the map
- Cleaned up the treat and radar range functions a bit
