This is the launch clamp side of the fix for the EL-ReStock launch clamp
compatibility issue. The issue was reported in the EL thread and started
out as issues with getting the build cost but after fixing that, had
issues with the clamps extending properly when built at a survey site.
The bulk of the fix for that is (or will be) in EL, but this change is
for handling rotated clamps: it points the tower in the correct (editor)
direction prior to the tower being extended.
Add a fallback method for the launch clamp module that does not require GPU instancing, for users with older computers. This method is currently very slow when calculating several launch clamps in a single frame in the editor, but fine in the flight scene
• Use instancing instead of editing the mesh to extend the launch clamp girder
• Calculate length from local position when in editor to avoid slight delay
