add recomp::Configuration and ultramodern::MessageQueueControl + plum…

[gcsmith]

Example from Superman 64, which needs to disable PI message requeues due to massive performance regression:

    ultramodern::MessageQueueControl message_queue_control{};
    message_queue_control.requeue_pi = false;

    recomp::Configuration cfg{
        .project_version = project_version,
        .window_handle = {},
        .rsp_callbacks = rsp_callbacks,
        .renderer_callbacks = renderer_callbacks,
        .audio_callbacks = audio_callbacks,
        .input_callbacks = input_callbacks,
        .gfx_callbacks = gfx_callbacks,
        .events_callbacks = thread_callbacks,
        .error_handling_callbacks = error_handling_callbacks,
        .threads_callbacks = threads_callbacks,
        .message_queue_control = message_queue_control,
    };

    recomp::start(cfg);