🚀 Feature Request: Add Support For Remote Rust Templates In C3

[megaconfidence]

Describe the solution

Remote Rust templates are 90% supported in C3 today, but we need to make a few tweaks to ensure C3 updates the app name and authors in Cargo.toml. Here's a sample GH Rust repo that can be used to test this https://github.com/megaconfidence/rs-hello-world-http