Generate scGPT zero-shot cell type annotation module

[dorien-er]

Conversion of src/scgpt/annotation/script.py into a viash component (script is available from branch scgpt-annotation)

[dorien-er]

This script is based on the following scGPT tutorial, but we factored out the training aspects and just do zero-shot inference instead.

https://scgpt.readthedocs.io/en/latest/tutorial_annotation.html