Add Raster Prop Monitor from Kerbal Stuff

This pull request was automatically generated by Kerbal Stuff on behalf of Teonlight, to add [Raster Prop Monitor](https://kerbalstuff.com/mod/425/Raster%20Prop%20Monitor) to CKAN.

Please direct questions about this pull request to [Teonlight](https://kerbalstuff.com/profile/Teonlight).