Issue/#57 #58 secretlock sha512 to sha256 && New lock hash algorithms for secret lock

[rg911]

New hash types added based on newLockHashAlgorithm

Changed default secret lock hash type SHA3_512 to SHA3_256

tests added

[coveralls]

Pull Request Test Coverage Report for Build 123

• 8 of 9 (88.89%) changed or added relevant lines in 1 file are covered.
• 10 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.9%) to 71.463%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/model/transaction/HashType.ts	8	9	88.89%

Files with Coverage Reduction	New Missed Lines	%
src/model/namespace/NamespaceId.ts	2	66.67%
src/service/NamespaceService.ts	8	21.43%

Totals
Change from base Build 115:	-0.9%
Covered Lines:	758
Relevant Lines:	1004

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💛 - Coveralls