Proto commits in FederatedAI/FedVision

These 5 commits are when the Protocol Buffers files have changed:

Commit:5f7e439
Author:weiwee

add protobuf tools (#1) Signed-off-by: weiwee <wbwmat@gmail.com>

The documentation is generated from this commit.

Commit:de3af3c
Author:weiwee

move aggregator's parameter to config file(#1) Signed-off-by: weiwee <wbwmat@gmail.com>

Commit:d6e93db
Author:weiwee

pickle feeders and support visualdl(#1) Signed-off-by: weiwee <wbwmat@gmail.com>

Commit:59467ee
Author:weiwee

add general paddle detection support(#1) Signed-off-by: weiwee <wbwmat@gmail.com>

Commit:7edeee5
Author:weiwee

init version (#1) Signed-off-by: weiwee <wbwmat@gmail.com>