KSPI and Default (Universal fallback) configs

I worked up a MM config which will deal with KSPI's weird configs and tanks/resource conflicts. It does not address the engines beyond the ELECTRIC_PROPELLANT and NTRs, and the Hybrid SRB. Conventional engines should be handled by whatever set of engine configs the user picks up.

I also threw in a nice catch-all fallback config for Liquid/Ox and straight Liquid tanks which aren't configured individually, and it attempts to cover Monopropellant, but that's a work in progress. 

Both could use more testing, but I've spent hours pouring over them and studying the code, and have tested it a few times myself. I'm not getting anyone giving feedback on my dev thread after a few days, so either it's not getting good test exposure, or there's nothing wrong with it.

Final note: this is my first Github pull request, so I am ever so sorry if I did anything wrong!