Support bson date time

[cortiz37]

Allows queries with ISODate keyword.
This uses Java 8 datetime API.

[codecov-io]

Codecov Report

Merging #6 into master will increase coverage by 0.19%.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master    #6      +/-   ##
=======================================
+ Coverage    95.8%   96%   +0.19%     
=======================================
  Files          13    13              
  Lines         143   150       +7     
  Branches        5     5              
=======================================
+ Hits          137   144       +7     
  Misses          6     6

Impacted Files	Coverage Δ
...thub/limansky/mongoquery/reactive/BSONParser.scala	89.47% <100%> (+0.58%)	⬆️
...b/limansky/mongoquery/core/bsonparser/Parser.scala	100% <100%> (ø)	⬆️

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