Add building-and-testing-rust.md

[foursixnine]

Right now, it's a manual search and replace, I would like to build the docs as I find myself the answers to enable my own rust workflows beyond what https://github.com/foursixnine/cndk8/blob/main/.github/workflows/rust.yml is already doing.

PoC: Add documentation for rust workflows

Why:

Because there's no documentation on how to properly handle rust stuff on github

would take a look later at github/docs/issues/23181 and see what else fails

What's being changed (if available, include any code snippets, screenshots, or gifs):

So far adding documentation based off the Golang one, and my own journey through https://github.com/foursixnine/cndk8/ and [isototest-ng](https://github.com/os-autoinst/isotest-ng/

Commits, PR's will be listed

Check off the following:

Still WIP:

• Update filename
• A subject matter expert (SME) has reviewed the technical accuracy of the content in this PR. In most cases, the author can be the SME. Open source contributions may require a SME review from GitHub staff.
• The changes in this PR meet the docs fundamentals that are required for all content.
• All CI checks are passing.