Feat: option not to list poetry development dependencies

[tngraf]

Implements feature request 529

[jkowalleck]

Thanks for the contribution, @tngraf .
We are currently working on the next major version: https://github.com/CycloneDX/cyclonedx-python/milestone/3 // #524
This means feature stop, for now.
If you want to provide the implementation, then please have a talk with us in #474 so we can coordinate it.

[tngraf]

Thanks for the quick reply.
Sorry for not having checked #474 before. I will have a look at it.