Modified 'sunset_prov_indices' to add an aggregation node of hcst and obs before defining the IndexCalculation node

Added 'sunset_prov_indices' for index calculation provenance (tested it succesfully with NAO_recipe.yml)

Finished adjusting the Reggriding provenance and included a new provenance function for calibration 'SUNSET_PROVENANCE/sunset_prov_calibration.R'

Finished the Regridding provenance implementation inside 'sunset_prov_dataset.R' and organized the functions. 'metaclipR_SUNSET' folder to store metaclipR modified functions and 'SUNSET_PROVENANCE' to store direct provenance functions + other developed tools

New provenance test focusing on dataset and datasubset, adding the new function that trasforms s2dv_cube into climate4R object

New provenance testing using a new function that transforms s2dv_cube into climate4R objects! Could include metaclipR.Datasubset()

Same as last push, but added a common command node for the fcts/hcst and the reference/observation data

Merge branch 'dev-test-provenance' of https://earth.bsc.es/gitlab/es/auto-s2s into dev-test-provenance

Merge branch 'dev-test-provenance' of https://earth.bsc.es/gitlab/es/sunset into dev-test-provenance

Removed line to prevent an error (same that happened on GitLab CICD runner) and added some metaclipR calls in the test file

Included cross-validation in score climatologies

See merge request !108