proxy: Add a client API
proxy: Add a client API

Clients talk to the proxy with an API made of JSON packets. While we do
expose and document that level of the API, we can also provide
convenience go wrappers to make the RPC calls to the proxy. It should
make writing go programs (and tests!) much easier.

Signed-off-by: Damien Lespiau <64bd3cb94f359c1a3ce68dae5e26b40578526277@intel.com>

dlespiau/clearcontainers-proxy,dlespiau/proxy,dlespiau/proxy,clearcontainers/proxy,clearcontainers/proxy,dlespiau/clearcontainers-proxy