[Feature Request] `keep-aligned`

[zojize]

Clear and concise description of the problem

I've always found it annoying that formators unnecessarily format well-aligned code blocks, making them terser but ruining the readability and aesthetical appeal, especially for stuff like const matrices and long equations. For example:

export const matrix = [
  1, 0, 0,
  0.866, -0.5, 0,
  0.5, 0.866, 42,
]

Formators would typically align the code above as such, but it often would be ideal to vertically align them by the commas like this:

// @keep-aligned , , ,
export const matrix = [
  1    , 0    , 0 ,
  0.866, -0.5 , 0 ,
  0.5  , 0.866, 42,
]

I find this library to be the perfect solution to implement and automate this process, hence the feature request.

Suggested solution

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Additional context

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