Ability to add documentation to a mapping rule

[gordonmilligan-uod]

This is linked to issue #628

To improve the learnings that can be gained from mappings, it would be good if there was the option to create a short note when you generate a mapping to document the decision process that was made for that mapping rule.

[spco]

This is a really nice idea and wouldn't take too much work. Likely add a column to the ScanReportConcept table, and an input box to the FE view. Might require some thought in the case where there are multiple SRConcepts for a single Value or Field.

[AndyRae]

I would be interested in your perspective on this one @DrUrwin @armando-mv
Given the loss of precision in mappings that we've spoke about, this functionality would feel very helpful to me (and also straightforward to implement).

[AndyRae]

I've moved this to a discussion - as it needs wider thought, design, and planning.
I have some initial ideas around this which I will share as well.

[AndyRae]

I think a good opportunity to do this aligns with #57 - with SSSOM, there is the additional comment field which is designed for:
Free text field containing either curator notes or text generated by tool providing additional informative information.

Additionally, mappings could be enriched with further context - confidence, author_id, predicate_id .

Effectively if mappings are to be understood and learnt from - the who/when/why/how should be added, right now we just have the what.