[FEATURE] Support dynamic import

Support dynamic import :

module.js :

export const foo = _ => {
  console.log('foo');
}

main.js :

const main = async _ => {

  const m = await import('module.js');
  m.foo();

  (await import('module.js')).foo();

}

main();

Should display :

foo
foo

The thing is about supporting 'export' and 'import' keywords.

Provide feedback