feat: rust runtime

[QuiiBz]

About

Testing the possibilities to rewrite the runtime in Rust.

Pros:

• No double GC (Node.js (yes) + V8 (yes) VS Rust (no) + V8 (yes))
• Should be faster, mostly for the HTTP server in @lagon/serverless
• Should scale a lot more

Cons:

• Rust is harder to learn than JS / fewer peoples know it
• Implicitly means a rewrite of @lagon/serverless and @lagon/cli