Support ES modules

The runtime currently handles commonjs modules - and if an import statement is encountered the application will crash.

The implementation is currently in ModuleInternal.mm

It would be awesome if es modules were supported, since v8 already supports them - we are just missing the implementation for loading them (same-ish logic as for commonjs)

A reduced example for supporting es modules: https://stackoverflow.com/a/52031275/2270725

The gist of it is - we have to call ScriptCompiler::CompileModule on the source

Local<Module> module;
if (!ScriptCompiler::CompileModule(isolate, &source).ToLocal(&module)) {
  // if you have a v8::TryCatch, you should check it here.
  return;
}

Unresolved questions:

• Can the runtime support both types and interop between them?

Inizia in ModuleInternal.mm tracciando il percorso di caricamento commonjs esistente e confrontalo con l’esempio fornito ScriptCompiler::CompileModule. Esamina come dovrebbero funzionare il caricamento dei moduli V8 e l’interoperabilità con commonjs. Il lavoro è completato quando le istruzioni import non causano più arresti anomali e il runtime supporta l’interazione prevista tra entrambi i tipi di modulo.