Include dynamic import example when downstream deno compile support is implemented

[vectronic]

Add to hello.ts something like this to import template-deno-wasm-rust library:

import { log } from "../deps.ts";
import { denoLib } from "../deps.ts";

/**
 * Logs out some greetings.
 */
export async function hello(): Promise<void> {
  log.info("Hello");
  denoLib.world();
  log.info("Hello");

  const rustLib = await import("https://raw.githubusercontent.com/flowscripter/template-deno-wasm-rust-library/main/mod.ts");
  rustLib.world();
}

Additional context
Waiting for downstream issue:

• Support importing wasm modules  denoland/deno#2552
• deno compile does not have dynamic import support denoland/deno#8655