Improve Protobuf tooling.

[Bartlomiej Plotka]

To make this really good standard, we need to improve the ecosystem. It's not bad (e.g IDE proto files support exists, tools are reliable, version etc), but there are rough edges:

• protoc does not automate path lookups, it's hard to find correct paths (e.g all has to be absolute, for some reason)
• have a bit confusing errors
• requires multiple multi-lang binaries (protoc, protoc-gen-go protoc-gen-go-openconfig), with strict naming (plugin system)
• It's hard to discover out the definition proto used from API/Server/Executable

All is solvable though. Help & ideas welcome 🤗