WIP: Add Transformers Text Router

[sjrl]

Related Issues

• fixes #7017

Proposed Changes:

Add Transformers Text Router based off of TransformersQueryClassifier (from Haystack v1)

How did you test it?

Still need to do

Notes for the reviewer

Checklist

• I have read the contributors guidelines and the code of conduct
• I have updated the related issue with new insights and changes
• I added unit tests and updated the docstrings
• I've used one of the conventional commit types for my PR title: fix:, feat:, build:, chore:, ci:, docs:, style:, refactor:, perf:, test:.
• I documented my code
• I ran pre-commit hooks and fixed any issue