[LGR] TRAN* for refined level grids

[aritorto]

This PR collects information for transmisibility values between cells belonging to the same level grid. Since grid refinement is currently supported only for corner-point grids, the implementation is limited to that case.

Additional work in opm-common is required—for example, modifying or overloading EclipseIO::writeInitial(...) to accept a std::vectordata::Solution rather than a single data::Solution as its first argument.

A few lambda expressions have been "converted" into private member functions to reduce code duplication.

PR depends on OPM/opm-grid#969

[aritorto]

jenkins build this serial please

[aritorto]

benchmark please

[ytelses]

Benchmark result overview:

Test	Configuration	Relative
opm-git	OPM Benchmark: drogon - Threads: 1	0.997
opm-git	OPM Benchmark: drogon - Threads: 8	1.09
opm-git	OPM Benchmark: punqs3 - Threads: 1	0.985
opm-git	OPM Benchmark: punqs3 - Threads: 8	1.007
opm-git	OPM Benchmark: smeaheia - Threads: 1	1.01
opm-git	OPM Benchmark: smeaheia - Threads: 8	1.001
opm-git	OPM Benchmark: spe10_model_1 - Threads: 1	1.014
opm-git	OPM Benchmark: spe10_model_1 - Threads: 8	1.012
opm-git	OPM Benchmark: flow_mpi_extra - Threads: 1	1
opm-git	OPM Benchmark: flow_mpi_extra - Threads: 8	1.112
opm-git	OPM Benchmark: flow_mpi_norne - Threads: 1	0.997
opm-git	OPM Benchmark: flow_mpi_norne - Threads: 8	1.003
opm-git	OPM Benchmark: flow_mpi_norne_4c_msw - Threads: 1	0.999
opm-git	OPM Benchmark: flow_mpi_norne_4c_msw - Threads: 8	0.957

• Speed-up = Total time master / Total time pull request. Above 1.0 is an improvement. *

View result details @ https://www.ytelses.com/opm/?page=result&id=2979

[aritorto]

Replaced by #6799