Function run 

pub fn run<H, Args>(handler: H)
where
    H: Handler<Args>,
    H::Output: IntoResponse,

Runs a handler function, extracting request data and sending the response.

This is the main entry point for handling requests. It:

1. Creates a new Request from the host
2. Calls the handler function with extracted data
3. Converts the result to a Response
4. Sends the response to the host

Example

use wasm_runner_sdk::prelude::*;

fn my_handler() -> impl IntoResponse {
    "Hello, World!"
}

#[no_mangle]
pub extern "C" fn _start() {
    run(my_handler);
}