Implement type resolver

[stepancheg]

Protobuf parser need to implement logic of resolving names, e. g. given

message Foo {
   Bar = 1;
}

Bar needs to be resolved to something like some.package.Bar or some.package.Foo.Bar and type kind of Bar needs to be determined (message or enum).

I started implementing this logic as part of rust-protobuf, and I guess the same logic exists in quick-protobuf, so it would be convenient it this common logic could be pulled into protobuf-parser.