Adding skeleton code for the daemon and a testing client

[tjayrush]

Closes #1.

This is ready to merge. I left the kv.proto work as it did earlier, but for the non-kv protos, they are built into the build folder.

[canepat]

@tjayrush I've tried to build this branch locally but fails with the same error reported by CI job linux-clang-coverage:

CMake Error at silkrpc/CMakeLists.txt:94 (file):
  file COPY cannot find "/home/builder/build/eth.pb.cc": No such file or
  directory.

[canepat]

Moreover I would like to discuss where we should place things in the repo (maybe we could write a guideline after we reach an agreement) because IMHO notes folder should be placed outside silkrpc subtree.

[tjayrush]

@tjayrush I've tried to build this branch locally but fails with the same error reported by CI job linux-clang-coverage:

CMake Error at silkrpc/CMakeLists.txt:94 (file):
  file COPY cannot find "/home/builder/build/eth.pb.cc": No such file or
  directory.

I think I should use a custom_command here. file(COPY (I guess) is a cmake time command (it runs during the cmake). After make clean, the files don't exists and they do not exist until protoc creates them (which happens during make), so of course cmake can't find them.

I commented this out for now. We can discuss tomorrow.

[tjayrush]

Moreover I would like to discuss where we should place things in the repo (maybe we could write a guideline after we reach an agreement) because IMHO notes folder should be placed outside silkrpc subtree.

I'm totally open to re-arranging the files in any way that works. In fact, notes is really only for my use, so maybe we can put it in the .gitignore or something.

Again, we can discuss tomorrow.