Basic rust application support

[fpacifici]

We need to be able to add rust application logic in our deployment pipeline.
The application descriptor is python (or maybe yaml or both), this does not mean we cannot reference a rust library.

The goal of this task is to define how people will add Rust code inside python applications.
Performance is not critical here, dev environment only.

Provide:

• A way to reference python functions in the pipeline
• A way to package them together with the pipeline.

Specs and context

• https://www.notion.so/sentry/Rust-integration-architecture-2228b10e4b5d8009b28ad40bdcfba4a9
• https://www.notion.so/sentry/The-rust-arroyo-runtime-2228b10e4b5d806dbe9ccd4e70c93aa2