gRPC and vereign services code generation

Part of #18

This MR includes, the templates and generated code with the vcl-gen tool, and gRPC json encoder.

cpp/cmake/ProtoGenerate.cmake

@@ -11,8 +11,8 @@ function(target_proto_generate)
   message(STATUS "proto target: ${PROTO_TARGET}")
   message(STATUS "  proto output dir: ${PROTO_GEN_DIR}")
   message(STATUS "  proto src dir: ${PROTO_SRC_DIR}")
+  message(STATUS "  ${PROTO_DEFINITIONS}")
 
-  # FIXME: remove hardcoded googleapis include below
   foreach (proto ${PROTO_DEFINITIONS})
     get_filename_component(_proto ${proto} ABSOLUTE)
     get_filename_component(_proto_path "${_proto}" PATH)
@@ -31,7 +31,6 @@ function(target_proto_generate)
       --cpp_out "${PROTO_GEN_DIR}"
       --proto_path "${PROTO_SRC_DIR}"
       -I "${_proto_path}"
-      -I "${CMAKE_SOURCE_DIR}/src/vereign/proto/googleapis"
       "${_proto}"
       DEPENDS "${_proto}")
 
@@ -52,7 +51,6 @@ function(target_grpc_generate)
   message(STATUS "  grpc output dir: ${PROTO_GEN_DIR}")
   message(STATUS "  grpc src dir: ${PROTO_SRC_DIR}")
 
-  # FIXME: remove hardcoded googleapis include below
   foreach (proto ${PROTO_DEFINITIONS})
     get_filename_component(_proto ${proto} ABSOLUTE)
     get_filename_component(_proto_path "${_proto}" PATH)
@@ -72,7 +70,6 @@ function(target_grpc_generate)
       --cpp_out "${PROTO_GEN_DIR}"
       --proto_path "${PROTO_SRC_DIR}"
       -I "${_proto_path}"
-      -I "${CMAKE_SOURCE_DIR}/src/vereign/proto/googleapis"
       --plugin=protoc-gen-grpc="${GRPC_CPP_PLUGIN_EXECUTABLE}"
       "${_proto}"
       DEPENDS "${_proto}")