ENH: update geoVoF module (#2076)

@johan_roenby

Changes:

• renamed interface fields recon::centre -> interfaceCentre.{phaseName}
• interface fields are not written by default
• compatible with AMR and load balancing

Status:

• all tests and tutorial cases pass

the testsuite is not included in the commits but is available in issue #2076 (closed).

I've cloned the branch and installed without encountering problems. Ran some of the interIsoFoam tutorials and checked log file and inspected results in paraview. Everything looks good and recon::* fields are now no longer written to file by default.

I would like to:

1. Add the DTCHull case which we got to work with interIsoFoam using nAlphaSubCycles.

2. Go through the code comment and code style.

@andy , would it be possible for me to get developer status so I can push to this branch? I will, of course, not touch anything else.

assigned to @andy

requested review from @kuti

marked this merge request as ready