Update protoc generation pipeline for Rust build

I write this with a heavy heart knowing that this change will (most likely) be massive. Currently we are generating the protocol buffers with the maven plugin: protobuf-maven-plugin.

It appears that this plugin is no longer an active repository (~2 years). While I can appreciate the simplicity to use this type of generation it might be in our best interest to move away from this.

I propose that we configure our own pipelines for generating the different language artifacts and publishing them to the respective language repositories to support each language that protoc supports.

I am happy to take on this work but the progress will be slow.

Start by locating the current protobuf-maven-plugin configuration and the existing protocol-buffer generation outputs. Define the language artifacts and publication targets that must be supported, then replace the current generation approach with separate pipelines and verify that each artifact is generated and published correctly.

Written by the indexing model from the issue text.