Support streaming and multiple tags

[adamwight]

Please feel free to decline this issue if the library will stay focused on its original use case. I found that id3vx is unable to detect tags which don't appear at the start of the file, for example in an arbitrary sample of internet radio.

I've captured some radio (from KALX, highly recommended) and it appears to have several tags:

$ grep -ac ID3 "sample 2022-10-09.mp3"
5

However, id3vx finds no tags:

> Id3vx.parse_file!("sample 2022-10-09.mp3")
** (Id3vx.Error) Tag not found
    (id3vx 0.0.1) lib/id3vx.ex:136: Id3vx.parse_file!/1