Reduced number of texture and model files

-MSV series parts now have MODEL{} nodes and share textures and models
-Removed over 36 MB of duplicate textures and models in GameData/ExtraplanetaryLaunchpads/Parts/aeon wich are not needed anymore
-Fixed 1mm error in the H.E.A.T's config (see commit 29ff68c25d07135ec5d9f5b086b11e306e74d093)