RFC: Partial modification of templates so that black is a no-op on the generated files

[marcoskirsch]

• [X] This contribution adheres to CONTRIBUTING.md.
• [X] I've updated CHANGELOG.md if applicable.
• [X] I've added tests applicable for this pull request

What does this Pull Request accomplish?

Changes the output of the codegenerator for the following files

... so that running black on them is a no-op.

This is work towards making the generator output conventions-compliant code.

List issues fixed by this Pull Request below, if any.

TODO: I can open an issue about this. I think the end goal would be to simplify development by running black on the output of the generator and run less into flake8 anger.