Support JSON.MERGE Command

[shacharPash]

Closes #3395

[codecov-commenter]

Codecov Report

Patch coverage: 60.00% and project coverage change: -0.05 ⚠️

Comparison is base (5164a89) 68.07% compared to head (d3d318f) 68.02%.

❗ Current head d3d318f differs from pull request most recent head 6b56d90. Consider uploading reports for the commit 6b56d90 to get more accurate results

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Additional details and impacted files

@@             Coverage Diff              @@
##             master    #3429      +/-   ##
============================================
- Coverage     68.07%   68.02%   -0.05%     
- Complexity     4543     4546       +3     
============================================
  Files           275      275              
  Lines         14597    14607      +10     
  Branches        978      978              
============================================
  Hits           9937     9937              
- Misses         4248     4256       +8     
- Partials        412      414       +2     

Impacted Files	Coverage Δ
...rc/main/java/redis/clients/jedis/PipelineBase.java	27.03% <0.00%> (-0.07%)	⬇️
...main/java/redis/clients/jedis/TransactionBase.java	12.47% <0.00%> (-0.03%)	⬇️
...va/redis/clients/jedis/json/RedisJsonCommands.java	87.50% <ø> (ø)
.../clients/jedis/json/RedisJsonPipelineCommands.java	37.50% <ø> (ø)
.../main/java/redis/clients/jedis/CommandObjects.java	82.35% <100.00%> (+0.03%)	⬆️
...rc/main/java/redis/clients/jedis/UnifiedJedis.java	71.77% <100.00%> (+0.15%)	⬆️
...in/java/redis/clients/jedis/json/JsonProtocol.java	96.29% <100.00%> (+0.14%)	⬆️

... and 2 files with indirect coverage changes

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[sazzad16]

LGTM! Resolve the conflicts now.