Improve debug information for complex types

[farism]

It would be nice to preserve some of the debug information for complex types so that Debug.log would be more useful. This would only take effect when developing, not when doing a production (minified) bundle.

Some examples are below (generated names can be differnet)

record Point2D {
  x : Number,
  y : Number
}

component Main {
  fun foo {
    ""
  }

  fun componentDidMount {
    /*
    Prints `r {x:0, y:0}`

    It would be nice if this was `Point2D {x:0, y:0}`
    */
    Debug.log(Point2D(0, 0))

    /*
    Prints an object `AI {_0: 'hello world', length: 1}`

    It would be nice if it would print the as-is `Maybe::Just("hello world")`
    */
    Debug.log(Maybe::Just("hello world"))

    /*
    Prints `ƒ a() { return ''; }`

    It would be nice if this set the function name so it would print `ƒ foo() { return ''; }`
    */
    Debug.log(foo)
  }

  fun render : Html {
    <div/>
  }
}