[Feature]: Ability to format consumed proto bytes as a hex string about trubka HOT 1 OPEN

Related: in the producer it would be good to have support for providing hex strings for bytes fields in the json template created by trubka produce schema -g. For example, if I want a mac address as bytes (6 bytes without delimiters) then I would like to have a 12-long hex string like Hex(????????????). But right now I have to think about how many base64 bytes and do B64(????????). This will also only work if the number of bytes is divisible by 3, otherwise there's no way to accurate generate what I need.

from trubka.