Benchmark beta
Add Benchmark

#	Hashrate	1 thread	Size	Duration	CPU	Threads	Version
1	12072.19	503.01	1MH	82.835	2	24	6.6.1
2	10712.95	446.37	1MH	93.345	2	24	6.15.3
3	9268.53	386.19	1MH	107.892	2	24	6.15.3
4	9157.17	381.55	1MH	109.204	2	24	6.15.3