regress: add emulate subsystem

Emulation is capable of running a set of regressions
parallelly simulating real Future trading.

Signed-off-by: Zhengwang Ruan <ruan.zhengwang@gmail.com>
strategy:futures/turt1/turtle: add emulation support

Signed-off-by: Zhengwang Ruan <ruan.zhengwang@gmail.com>