switchable MKS containers

[Grimmas]

Adding four switchable container wedges - regular and small containers for MKS solids and liquids.

They reuse the models from the ore and rocket fuel containers.

This relies on the other patch for FUR that I just submitted - Nils277/FelineUtilityRovers#58

Edit: I said MKS but strictly speaking they should work and be of use with base CRP as well, even if MKS is missing - thanks to the clever way you set up the stuff with the resource switch templates in KerbetrotterTools.

[Nils277]

I will keep this one open until KPBS has undergone the company takeover to Kerbetrotter.
Can you please add to the parts that they need MKS to be available? They might confuse users that have not installed MKS and wonder that they need these resources for.

[Grimmas]

I think that's already taken care of in the Kerbetrotter templates. IE if someone installs CRP and Kerbetrotter he would get the two liquids wedges but without MKS he would only get to store LF/Ox/Mono. And in the case of the solids wedges he would only get to store Ore. The additional resources are enabled not in the part but in your Kerbetrotter templates and encompass not only MKS but also Pathfinder, NFT, Ose, EL, etc

So rather than MKS containers these are more like CRP++ containers. That's why I made them depend on both CRP and Kerbetrotter DLL instead of on MKS.