Add trivia to SynArgPats.NamePatPairs

[nojaf]

Is your feature request related to a problem? Please describe.

Consider the following code:

let examineData x =
    match data with
    | OnePartData( // foo
        part1 = p1
      (* bar *) ) -> p1
    | TwoPartData(part1 = p1; part2=p2) -> p1 + p2

and relevant AST:

NamePatPairs
  ([(part1, tmp.fsx (4,14--4,15),
     Named
       (SynIdent (p1, None), false, None,
        tmp.fsx (4,16--4,18)))], tmp.fsx (4,8--5,17))

It would be nice if we had the ranges of the parentheses as trivia.

Describe the solution you'd like

Add SynArgPatsNamePatPairsTrivia that contains both ranges.
We might also want to consider updating the range of SynArgPats.NamePatPairs to include the parentheses.
Although I'm not hellbent on that specifically.

Describe alternatives you've considered

There is no real way of detecting the parentheses.

Additional context

related: #11481

Surfaced in fsprojects/fantomas#2541

//cc @dsyme, @auduchinok