MHKiT Conda Install

[ssolson]

Make MHKiT a conda package and publish via GitHub actions.

[ssolson]

Due to the restrictive versioning on the current mhkit release that we relaxed in #240 it will be best to add mhkit to conda following the next release. The current release causes build issues in conda.

[ssolson]

This PR will add MHKiT to conda-forge

conda-forge/staged-recipes#26643

[ssolson]