Add Hjson support

[PatoFlamejanteTV]

What feature do you want to get added on the base engine?

I think adding Hjson support would be nice, especially for documenting things like "what does value X mean" in chart/week .JSON files.

Also it supports comments:

{
  # hash style comments
  # (because it's just one character)

  // line style comments
  // (because it's like C/JavaScript/...)

  /* block style comments because
     it allows you to comment out a block */

  # Everything you do in comments,
  # stays in comments ;-}
}

https://hjson.github.io/

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[JordanSantiagoYT]

i don't think Hjson is needed

there just doesn't seem to be any real place where i'd consider using it, or it would break json support