Benchmark beta
Add Benchmark

#	Hashrate	1 thread	Size	Duration	CPU	Threads	Version
1	7312.35	609.36	1MH	136.755	1	12	6.15.0
2	6169.56	514.13	1MH	162.086	1	12	6.16.1
3	5756.39	479.70	1MH	173.720	1	12	6.15.3
4	3518.74	293.23	1MH	284.193	1	12	6.15.3