feat: support for bytes and num inline formatting

[m-muecke]

closes #644, #588, #643

[gaborcsardi]

Thanks and sorry for the long wait! I am not a big fan of optional dependencies. Luckily, R/sizes.R now has prettycode::pretty_bytes() embedded, and we could probably do that same for pretty_num()?

[m-muecke]

Thanks and sorry for the long wait! I am not a big fan of optional dependencies. Luckily, R/sizes.R now has prettycode::pretty_bytes() embedded, and we could probably do that same for pretty_num()?

done

[gaborcsardi]

Thank you!