* Update opm-common EGRID reader to support LGRs, NNCs, dual porosity, unit system info and time step filters
* Rearrange well reading code into separate class
* Update resdata library to not require an ecl_grid when reading well information. Only lgr names are needed, allows reused by opm_common reader
* Moved UnitSystem from RiaEclipseUnitTools to RiaDefines.
- Renamed UnitSystem to EclipseUnitSystem
- Replaced header includes and removed obsolete includes of RiaEclipseUnitTools.h
* Moved result name functions into separate file.
* Minor cleanup
Co-authored-by: rubenthoms <rubenthoms@users.noreply.github.com>
Co-authored-by: Magne Sjaastad <magne.sjaastad@ceetronsolutions.com>
Co-authored-by: magnesj <magnesj@users.noreply.github.com>