Ability to configure the naming convention for git-flow branches

[novopl]

What?

Add the ability to configure how the feature, hotfix and task branches are named. So that peltak can be used with different flows.

Why?

This would make it possible to use peltak with different flows than git-flow. For trunk based development you won't always use the feature/* prefix as all branches are feature branches.
Currently if you try to run the peltak feature merged in a setup like that it will exit with error saying you are not on a feature branch. This should be configurable so the peltak can be used in a wider range of projects.

How?

<Optional - How this should be implemented, should be technical>