The type no longer uses operator overloading and the matching entity
back-end has been revised to no longer expose a vector of strings
for the well names directly.
The functions no longer use the 'episeodeIdx' or Schedule
parameters. Update callers accordingly.
While here, split some long lines and remove unneeded local objects.
This commit switches to using the new guarantees provided by
ActionX::wellpi_wells (PR OPM/opm-common#4296), namely that the well
names are returned in sorted order on all ranks, to simplify how we
exchange the PI/II values. In particular, given this guarantee, we
can calculate the maximum values across all ranks because zero
values correspond to missing entries and non-zero values correspond
to known entries.
This is in preparation of making the match set for ACTIONX more
general. Having a fully private WELPI framework means we can change
the types more freely without having to rebuild all users of
ActionHandler.
While here, also add Doxygen-style documentation to the ActionHandler.
