[WIP] Granite 2b & 3b support

[yannicks1]

Supporting granite 2b & 3b: work in progress

consumes this fms branch: https://github.com/foundation-model-stack/foundation-model-stack/tree/granite-2b-expand-q-k-128

[github-actions]

👋 Hi! Thank you for contributing to vLLM support on Spyre.
Just a reminder: Make sure that your code passes all the linting checks, otherwise your PR won't be able to be merged. To do so, first install the linting requirements, then run format.sh and commit the changes. This can be done with uv directly:

uv sync --frozen --group lint --active --inexact

Or this can be done with pip:

uv pip compile --group lint > requirements-lint.txt
pip install -r requirements-lint.txt
bash format.sh

Now you are good to go 🚀

[maxdebayser]

Do we know if this is a temporary hack? Then perhaps we can add a compatibility test

[yannicks1]

will see how they implement it properly in fms. I do just mirror their strategy here... (very much work in progress)