Fixed attach node sizes and positions for the H.E.A.T and MSV series parts.

All of these parts had no attach node size set, causing the game to assume they were size 1 (1.25m diameter).
I also noticed that most node positions were off by a few centimeters (or, in case of the H.E.A.T's radial attach node, FOUR meters!) and corrected them, except for the radial attach nodes of the 1.25m and 0.625m parts.
Attach nodes on the MSV-2000's were still off by 1mm

literally the most important commit ever
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)
Merge pull request #56 from KreuzungBaka/master

Fixes to the MSV series and H.E.A.T parts