Idea: light weight rust as zero build scripting language

As nodejs don't support import from url.

The way Deno is compatible with Node is import map.

rust-runtime can also do it like

{
  "imports": {
    "a": "http://127.0.0.1/a.rs",
    "b": "http://127.0.0.1/b.rs",
    "c": "http://127.0.0.1/c.rs",
    "x": "http://127.0.0.1/x.rs",
    "y": "http://127.0.0.1/y.rs",
    "z": "http://127.0.0.1/z.rs"
  }
}