feat: adding studyStartDate as source of evidenceDate

[DSuveges]

Context

This update includes studyStartDate as source of evidenceDate. This change enables dating ChEMBL evidence.

Number of evidence with available studyStartDate:

+------------+------+
|datasourceId| count|
+------------+------+
|      chembl|485114|
+------------+------+

[Copilot]

Pull Request Overview

This PR adds studyStartDate as a source for evidenceDate in the ChEMBL evidence processing pipeline. The change enables dating of ChEMBL evidence records that previously may have lacked date information.

• Added studyStartDate as a new column option in the coalesce function for determining evidence dates
• Updated the priority comment to reflect the new column ordering for evidence date selection
• This change affects approximately 485,114 ChEMBL evidence records that have available studyStartDate values

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[ireneisdoomed]

Thanks! Would it make more sense prioritising releaseDate over the literature reference? This is available por PPP data and for ClinGen. I think it would precede a potentially availale publication date