For some cases we are running, it is relevant to monitor both the mass and the momentum in VOF simulations
Description of the solution
Add momentum monitoring to the mass monitoring. I don't think it's worth it to make multiple files, instead I appended the information to the existing file.
How Has This Been Tested?
Tested on some of our regular benchmark and the results make sense.
Documentation
Updated documentation accordingly
Future changes
The parameter monitor mass conservation is maybe not the most appropriate right now, but I don't want to break the prm file in this PR. We could have a parameter called monitor conservation instead, of maybe monitoring mass and momentum, but i 'd rather postpone this change because it's only esthetics
Description of the problem
Description of the solution
How Has This Been Tested?
Documentation
Future changes