Request: "Compressed"

Just how fn_args_layout works for function declarations, but make it work for function calls as well.

eg:

use super::*;

pub fn create_window_ex_w() {
  CreateWindowExW(dwExStyle, lpClassName, lpWindowName, dwStyle, X, Y, nWidth, nHeight, hWndParent, hMenu, hInstance, lpParam)
}

should become (depending on line with and such) something like this:

use super::*;

pub fn create_window_ex_w() {
  CreateWindowExW(dwExStyle, lpClassName, lpWindowName,
    dwStyle, X, Y, nWidth, nHeight, hWndParent, hMenu,
    hInstance, lpParam)
}

instead of going to a completely vertical layout.

Start with the fn_args_layout option linked in the issue and compare its handling for function declarations with function calls. Reproduce the shown Rust example using rustfmt and verify that long calls use a compressed multi-line layout rather than a fully vertical one, while respecting line width.