feat: support multiple multihash algorithms in protocol

[sandrask]

Add support for an array of multihash algorithms in protocol.

As per Sidetree working group the first version of the protocol should support one algorithm only and unique suffix should be calculated based on that version. Created follow-up issue for protocol version 2 (#528)

Closes #522

Signed-off-by: Sandra Vrtikapa [email protected]

[codecov]

Codecov Report

Merging #526 (1c3e1f1) into master (188eb39) will increase coverage by 0.00%.
The diff coverage is 90.90%.

@@           Coverage Diff           @@
##           master     #526   +/-   ##
=======================================
  Coverage   91.77%   91.77%           
=======================================
  Files          73       74    +1     
  Lines        3038     3087   +49     
=======================================
+ Hits         2788     2833   +45     
- Misses        141      143    +2     
- Partials      109      111    +2     

Impacted Files	Coverage Δ
pkg/versions/0_1/operationparser/recover.go	93.87% <60.00%> (-1.92%)	⬇️
pkg/hashing/hash.go	92.85% <100.00%> (+0.26%)	⬆️
pkg/versions/0_1/client/create.go	94.44% <100.00%> (ø)
pkg/versions/0_1/model/util.go	95.34% <100.00%> (ø)
pkg/versions/0_1/operationparser/create.go	86.36% <100.00%> (ø)
pkg/versions/0_1/operationparser/update.go	91.83% <100.00%> (ø)
pkg/versions/0_1/txnprovider/provider.go	98.12% <100.00%> (+<0.01%)	⬆️

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