Benchmark beta
Add Benchmark

#	Hashrate	1 thread	Size	Duration	CPU	Threads	Version
1	141.14	70.57	1MH	7085.355	1	2	6.15.2
2	111.45	55.73	10MH	89724.019	1	2	6.16.3
3	102.45	51.22	1MH	9761.173	1	2	6.16.3
4	66.08	33.04	1MH	15134.202	1	2	6.18.0