lazy builtins

[jasonwilliams]

I just did this to experiment if lazy loading builtins would work and tryed it out with Array for now.

Using the js input

console.log(Array);

Before:

After:

@jedel1043 do you have any pointers on how is best to structure this, and is the GetName operation BindingLocatorEnvironment::GlobalObject going to be a safe assumption for global builtin access?

[jasonwilliams]

Closing in favour of #3973