Make "add type annotation" code refactoring applicable to all params

For the code:
`let add x y = x + y`

Add a code refactoring that will change it to:
`let add (x: int) (y: int) = x + y`

We already have the refactoring, it's just not used as a bulk one. Don't know what machinery is needed for this, probably something similar to what is there is code fixes.

_Originally posted by @psfinaki in https://github.com/dotnet/fsharp/issues/10421#issuecomment-1622467357_