Helper function for audio input names

[Julusian]

• I'm submitting a ...
  [*] feature request

• Summary

It can be quite tedious as a user of this library to give each audio input a name, as it requires knowledge of each input type and translating the ids etc.
There should be a function to generate/find the name of an input so that this doesnt have to figure out for each consuming project.

This should be based on https://github.com/bitfocus/companion-module-bmd-atem/blob/1080a0f893463638887ecb5a030996e5f006489a/src/choices.ts#L266

• Other information (e.g. detailed explanation, stacktraces, related issues, suggestions how to fix, links for us to have context, eg. StackOverflow, personal fork, etc.)