ID3v2: Report bad or unsupported frame IDs

[uklotzde]

This is the first step to reveal information about malformed/unsupported tags.

Those frames should be skipped when parsing in Relaxed mode.

Note: The BadFrameId error was used for different purposes, not only for parsing as the message suggests.

[Serial-ATA]

Thanks, I reverted the purely fmt changes. I don't think it looks too good, I'll have to configure rustfmt to cut that out.

[uklotzde]

I had to update my (barely) used nightly toolchain just to fix the CI errors. This is inconvenient.