Function create_task 

pub fn create_task<F, L>(
    locked: &mut Locked<L>,
    kernel: &Kernel,
    initial_name: TaskCommand,
    root_fs: Arc<FsContext>,
    task_info_factory: F,
    security_state: TaskState,
) -> Result<TaskBuilder, Errno>
where
    F: FnOnce(&mut Locked<L>, i32, Arc<ProcessGroup>) -> Result<TaskInfo, Errno>,
    L: LockBefore<TaskRelease>,