[Feature request] --prompt should accept any unique prefix of the proposed Musicbrainz release IDs

[ekovac]

Repro steps:

1. Run whipper cd rip --prompt with a CD in the drive that has multiple matching MBIDs. ("Sevens" by Garth Brooks has several TOC-identical pressings, as an example.)
2. Enter a unique prefix of one of the listed MBIDs ('b9b4c' for 'b9b4cb95-1e34-48f1-b8c2-731cf0cef03a', for example.)

Expected Behavior:

1. whipper correctly selects the Musicbrainz release entry since the entered value is unambiguous, similar to how git will happily accept shortened commit numbers so long as they are unique prefixes.

Actual Behavior:

1. whipper says the MBID doesn't match and aborts.

Happy to write a PR for this.

[github-actions]

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[ekovac]

Oh, nevermind, looks like you already have something similar, it's just the version I'm using is quite old: ebdbde4