feat: show allowed types

[Olen]

List allowed types in verbose error output.

Since commit types are configureable it might be useful to list them in the verbose error messages

[thekaveman]

I agree with you that this would be nice to include in the output.

I think it should be done a little differently though, to align with how scope is handled:

• Append the line only when group == "type"
• Create the joined list of options (types) before using it in the appended line
• Follow the format and color scheme of other lines, specifically using the list of scopes line as an example to follow

Hopefully this makes sense, let me know if you have any questions.

[thekaveman]

Thanks for your work on this @Olen.

I've cherry-picked your commit into a larger refactor PR I'm working on in #119, so rest assure this change will be merged with that PR.

[Olen]

Happy to hear that.
Sorry I was unable to follow up before. Way to many projects right now.

[thekaveman]

I hear you! Thanks for the contribution.