[compdat] * handling in COMPDAT

ecl2df is used as part of the Flownet tool (https://github.com/equinor/flownet). We are applying it to an Equinor asset model that contains the following lines in the SCHEDULE section:

COMPDAT
-- WELL I J K1 K2 stat Sat. CF DIAM KH SKIN ND DIR Ro
' * ' 0 0 1 47 'SHUT' 1* 1* 0.152 /
/

(The spaces around the * are not there in the actual file.)

This causes an error that originates from compdat.py, line 130: "WELSPECS must be provided when I is defaulted in COMPDAT" since rec_data["WELL"] in this case is equal to '*' which is not included in the well list called "welspecs".

A solution could be to check if rec_data["WELL"] contains a * and, if so, create a well list that contains all wells that meet the required name format. The check that I and J are specified should then be done for all wells in this list.

Start in compdat.py around line 130 and trace how COMPDAT records resolve WELL values against WELSPECS. Check how a '*' WELL value should select matching wells, then ensure I and J validation is applied to each selected well; done means the shown COMPDAT input parses without the current error.

Written by the indexing model from the issue text.