Implements Cuckoo Filter RedisBloom Commands

[bsbodden]

• Adds Cuckoo.java interface in the io.rebloom.client.cf package that implements Cuckoo Filter commands
• Adds an implementation of the Cuckoo interface commands methods to Client.java
• Adds tests matching those in https://github.com/RedisBloom/redisbloom-py and more (CF.SCANDUMP/CF.LOADCHUNK)
• See https://github.com/RedisBloom/JRedisBloom/issues/26

[codecov[bot]]

Codecov Report

Merging #30 (bbf9b3c) into master (7fcedbd) will decrease coverage by 32.22%. The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           master      #30       +/-   ##
===========================================
- Coverage   77.25%   45.02%   -32.23%     
===========================================
  Files           6        8        +2     
  Lines         299      513      +214     
  Branches       34       73       +39     
===========================================
  Hits          231      231               
- Misses         51      265      +214     
  Partials       17       17               

Impacted Files	Coverage Δ
src/main/java/io/rebloom/client/Client.java	26.68% <0.00%> (-49.28%)	:arrow_down:
.../main/java/io/rebloom/client/cf/CuckooCommand.java	0.00% <0.00%> (ø)
...in/java/io/rebloom/client/cf/IteratorDataPair.java	0.00% <0.00%> (ø)

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