prepare for move

grpc-common/php/route_guide/run_route_guide_client.sh

grpc-common/php/run_greeter_client.sh

grpc-common/protos/README.md

grpc-common/protos/auth_sample.proto

grpc-common/protos/hellostreamingworld.proto

grpc-common/protos/helloworld.proto

grpc-common/protos/route_guide.proto

grpc-common/python/helloworld/.gitignore

grpc-common/python/helloworld/README.md

grpc-common/python/helloworld/greeter_client.py

grpc-common/python/helloworld/greeter_server.py

grpc-common/python/helloworld/run_client.sh

grpc-common/python/helloworld/run_codegen.sh

grpc-common/python/helloworld/run_server.sh

grpc-common/python/route_guide/.gitignore

grpc-common/python/route_guide/README.md

grpc-common/python/route_guide/route_guide_client.py

grpc-common/python/route_guide/route_guide_db.json

grpc-common/python/route_guide/route_guide_pb2.py

grpc-common/python/route_guide/route_guide_resources.py