Add a window parameter to moveWindowToSpace()

[mogenson]

This allows the PaperWM API to be called externally with a provided window. I use it with a function in my HammerSpoon config that moves all windows for a specific application to a given space.

function move_app_windows_to_space(application, index)
    local windows = hs.window.filter.new(application):getWindows()
    for i, window in ipairs(windows or {}) do
        -- give time to process window events between moves
        hs.timer.doAfter(0.1 * i, function()
            PaperWM:moveWindowToSpace(index, window)
        end)
    end
end