Add RustCargoSteps workflow

[magravel]

Adds a Rust workflow that makes sure the code is well formatted, doesn't have Clippy errors, and that tests that are passing and validate the documentation.

This workflow is synced with these repositories:

• microsoft/mu_basecore
• microsoft/mu_plus
• microsoft/mu_rust_helpers
• microsoft/mu_rust_hid
• microsoft/mu_rust_pi
• microsoft/mu_tiano_platforms

This has been tested on a dummy repository.

Example: When fmt fails, we want other checks to still run in that case.

[makubacki]

The workflow does not need to run in this repo. You can place it in the https://github.com/microsoft/mu_devops/tree/main/.sync/workflows/leaf so it will be synced to repos with Rust code.

[makubacki]

@magravel, are you planning to let the file sync PR be created in all of these repos and then amend the fixes needed to the bot's file sync PR?

[magravel]

@magravel, are you planning to let the file sync PR be created in all of these repos and then amend the fixes needed to the bot's file sync PR?

Yes

[makubacki]

@magravel, since we're expecting sync PRs to fail and need to be fixed. Let's wait until Monday to merge this so it doesn't affect anything sync changes that may need to go in in the meantime.