Merge branch 'main' of gitlab.eclipse.org:eclipse/graphene/tutorials into main

graphene_llm_readme_gen/UserRatings/Dockerfile

graphene_llm_readme_gen/UserRatings/app.py

graphene_llm_readme_gen/UserRatings/requirements.txt

graphene_llm_readme_gen/UserRatings/server.py

graphene_llm_readme_gen/UserRatings/templates/index.html

graphene_llm_readme_gen/UserRatings/user_ratings.proto

graphene_llm_readme_gen/UserRatings/user_ratings_pb2.py

graphene_llm_readme_gen/UserRatings/user_ratings_pb2_grpc.py