Moved proto files to new folder inside buildgrid
Description
Due to clashes described in #21 (closed), the protobufs should live in their own folder to import separately from other projects.
Changes proposed in this merge request:
- Moved protobufs to new directory in:
buildgrid/_protos/
- Added new script to generate protobufs with
setup.py build_grpc
This merge request, when approved, will close issue/bug:
Fixes #21 (closed)