[WIP] CMake: Fix error locating protoc without Hunter

Error was:

| CMake Error at cmake/functions.cmake:52 (message):
|   Protobuf_PROTOC_EXECUTABLE is empty
| Call Stack (most recent call first):
|   cmake/functions.cmake:96 (compile_proto_to_cpp)
|   src/crypto/protobuf/CMakeLists.txt:6 (add_proto_library)

Author: eigendude

cmake/functions.cmake

@@ -45,8 +45,8 @@ function(add_flag flag)
 endfunction()
 
 function(compile_proto_to_cpp PROTO_LIBRARY_NAME PB_H PB_CC PROTO)
-  get_target_property(Protobuf_INCLUDE_DIR protobuf::libprotobuf INTERFACE_INCLUDE_DIRECTORIES)
-  get_target_property(Protobuf_PROTOC_EXECUTABLE protobuf::protoc IMPORTED_LOCATION_RELEASE)
+  #get_target_property(Protobuf_INCLUDE_DIR protobuf::libprotobuf INTERFACE_INCLUDE_DIRECTORIES)
+  #get_target_property(Protobuf_PROTOC_EXECUTABLE protobuf::protoc IMPORTED_LOCATION_RELEASE)
 
   if (NOT Protobuf_PROTOC_EXECUTABLE)
     message(FATAL_ERROR "Protobuf_PROTOC_EXECUTABLE is empty")