Broken import in Python generated code

[baely]

pb file is generated with line import sreeify_pb2 as sreeify__pb2 which relative import is broken on. Current workaround is to manually change file to match below:

sreetcode/python/gen/sreeify_pb2_grpc.py

Line 5 in c8ae4b9

from . import sreeify_pb2 as sreeify__pb2

Pretty sure the solution is a flag in buf.gen.yaml, something about relative import

Acceptance criteria

WHEN I generate code with buf generate protos
AND I run sreeifier as a containerised image eg. docker compose up --build sreeifier
THEN it should run without modification to generated files