Add --disable-formats CLI flag for selecting formats to disable

[sirosen]

Driven by the use-case in #220, and a chance to clean up the CLI interface over time.

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--disable-format and --regex-format disable overlap. And neither satisfies a user who wants to disable exactly one format (as in #220).

Proposed new usage would be:

# replaces --regex-format=disable
--disable-formats regex
# replaces --disable-format
--disable-formats ALL
# allows disabling multiple formats by parsing comma-separated list
--disable-formats uri-reference,regex,date

In the initial version, the CLI parser can handle all of these and define disabled format information for the format opts, normalizing new and old usages.
After that, I can flag the old usages deprecated for a while and eventually drop them.

EDIT: As a brief note to future readers, --disable-formats "*" was chosen instead of ALL.

[sirosen]

@binste, I know you were waiting on this, and I apologize for the long delay, but I've got this work right around the corner (#261).
Hopefully it's not too late to be useful to you. I'll wait to close this until I do the release, so you'll get notified when it comes out.

[sirosen]

0.23.0 is released with the new --disable-formats.

[binste]

This is great, thank you very much @sirosen and no reason to apologise. I'll integrate this into the Altair test pipeline soon, it's definitely still useful!