need to format indent for multi-fields-object in dictionary

[po-miyasaka]

As is

• Indent of object with multifields in dectionary is the following.
  The indent depends on keyname's length.

"dog-1": Dog(
    dict: [
        "apple": AppleJuice(
                              price: 100,
                              sale: true
                       ) ,
        "pi": PI(
                     price: 100,
                     sale: true
        ) 
    ]
),

To be

It should depends on "Debug.Option.indent".
It makes fields be easier to read.

"dog-1": Dog(
    dict: [
        "apple": AppleJuice(
              price: 100,
              sale: true
        ) ,
        "pi": PI(
              price: 100,
              sale: true
         ) 
    ]
),

[YusukeHosonuma]

Note: enum and tuple that has label are also too.