Replace ecl with resdata

[DanSava]

Closes: https://github.com/equinor/scout/issues/919

[codecov-commenter]

Codecov Report

Attention: 13 lines in your changes are missing coverage. Please review.

Comparison is base (e4bad26) 84.72% compared to head (76fb347) 84.72%.

❗ Current head 76fb347 differs from pull request most recent head b08409a. Consider uploading reports for the commit b08409a to get more accurate results

Files	Patch %	Lines
src/subscript/sector2fluxnum/flux_obj.py	41.66%	7 Missing ⚠️
src/subscript/sector2fluxnum/sector2fluxnum.py	61.53%	5 Missing ⚠️
src/subscript/summaryplot/summaryplot.py	88.88%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #631   +/-   ##
=======================================
  Coverage   84.72%   84.72%           
=======================================
  Files          52       52           
  Lines        7521     7521           
=======================================
  Hits         6372     6372           
  Misses       1149     1149           

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[mferrera]

👍