bitwindow: add hash calculator #513

Job	Run time
Build sidesail testchain on ubuntu-latest	4m 32s
Build sidesail testchain on macos-latest	4m 42s
Build sidesail testchain on windows-latest	5m 0s
Build sidesail ethereum on ubuntu-latest	4m 2s
Build sidesail ethereum on macos-latest	4m 14s
Build sidesail ethereum on windows-latest	4m 35s
Build sidesail zcash on ubuntu-latest	5m 1s
Build sidesail zcash on macos-latest	8m 14s
Build bitwindow on ubuntu-latest	3m 21s
Build bitwindow on macos-latest	1m 30s
Build bitwindow on windows-latest	3m 25s
Build launcher on ubuntu-latest	4m 4s
Build launcher on macos-latest	4m 52s
Build launcher on windows-latest	5m 37s
Upload artifacts to releases.drivechain.info	0s
	1h 3m 9s

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