feat: formatting

[Gnarus-G]

accidentally merged #42

[Gnarus-G]

So. The fact that empty ${} in template strings disappear through the lexer is fine, because `${}` and "" (an empty string) are equivalent.

[Gnarus-G]

Will refactor the template literal parsing after all. We lose too much information. `${"asdfasdf"}` != `"asdfasdf"` yet the formatter can only assume otherwise because the lexer is too dumb.