upload,validate: Add --validators option

[yarikoptic]

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).

[candleindark]

What are the potential values of the --validators option?

• auto. This one is clear. Just let the CLI to make decision. It is the current setting
• all. This is also clear. Just apply all possible validators.
• bidsschematools,bids-validator-deno,zarr,... is bit unclear. I supposed for values that are not auto or all, we only apply the corresponding validators that are explicitly specified? I guess that will mean we support multiple --validators options.
  • This will mean that we need to handle situations with multiple --validators options such as
    --validators auto --validators bidsschematools

[yarikoptic]

something like that, or just allow for a comma-separated list. If it is confusing, as use of auto or all and explicit list -- issue a warning or even raise an error, I do not care.