upload,validate: Add --validators option #1737

ATM we already interface multiple validators in dandi-cli. There are use cases which might ask for disabling or enabling some. Eg.

• in cases of partial uploads of BIDS datasets we might want to disable bids-validator-deno as it would not have access to full dataset and just rely on bidsschematools which I believe we do not report otherwise (we do use it to extract metadata though)
• ...

So I think we should add an option like

• --validators auto,all,bidsschematools,bids-validator-deno,zarr,...

where currently it is like auto as we do not bother with bids-validator(s) if we do not see it being a bids dandiset. With all it would really enable all of them.

Also I now created configuration label to mark issues which would point to specific options people must be able to specify for their dandisets locally (or globally).

edits:

• note that such filtering on validators, relates to the Add filtering of issues by type/ID or by file location #1743
• it is not to "force" any particular validator on a specific path, but rather to alter (shrink) list of available validators which are applied as applicable.
• for now blocked as we better decide on how to address is more holistically with 1743 and others.