Wishlist: quick fix for "possible incorrect indentation"

[vivainio]

Repro steps

Have this code:

    let foo = match [1] with
    | _ -> ()

You get squigglies for |, with the tip:

Possible incorrect indentation: this token is offside of context started at position (119:15). Try indenting this token further or using standard formatting conventions."

We could have an autofix to indent this correctly, yielding code:

    let foo = match [1] with
              | _ -> ()

As a bonus, pressing "tab" on the second line could stop at the minimum correct indentation. Currently,
you need to press space N times to hit the exact spot.

[psfinaki]

Closed by mistake, reopening

[brianrourkeboll]

It sure would be nice if FCS had a first-class indentation/offsides API of some kind... (See also #16999, #12158, #2848, etc.)