Add a container for FLOWS data output

[akva2]

Sits on top of #5950

[akva2]

jenkins build this please

[akva2]

jenkins build this opm-common=4460 please

[bska]

Sits on top of #5950

That PR was merged into master. Is this work ready for review now, @akva2 ?

[akva2]

as such, yes. however, there is incoming work in OPM/opm-common#4410 that will affect this. in particular I can simplify this as there is no longer a -1 index for the water phase in the generic fluid system, which means i remove some additional template stuff I had to do to avoid compiler warnings. I think we should wait for that and then I can redo.

[bska]

there is incoming work in OPM/opm-common#4410 that will affect this. [...] I think we should wait for that and then I can redo.

Noted. Thanks a lot for the information.

[akva2]

turns out the component index is still -1 for water, only the phase index changes, so i couldn't really simplify things. but in any case, this is now ready for review.

[akva2]

jenkins build this please

[akva2]

jenkins build this please

[bska]

Excellent. I think this is ready for merging once the final tiny issue has been addressed.

[akva2]

jenkins build this please

[bska]

Thanks a lot for the updates. This looks good to me now and I'll merge into master.