Adding JSON Generator

[ericspod]

This adds the JSON generator class to the library plus an example notebook.

[codecov-commenter]

Codecov Report

Merging #41 (5f2cff6) into dev (f261691) will increase coverage by 1.43%.
The diff coverage is 100.00%.

📣 This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

@@            Coverage Diff             @@
##              dev      #41      +/-   ##
==========================================
+ Coverage   75.20%   76.63%   +1.43%     
==========================================
  Files          12       13       +1     
  Lines         375      398      +23     
  Branches       51       53       +2     
==========================================
+ Hits          282      305      +23     
  Misses         75       75              
  Partials       18       18              

Impacted Files	Coverage Δ
randomdataset/generators/__init__.py	100.00% <100.00%> (ø)
randomdataset/generators/generator.py	69.69% <100.00%> (ø)
randomdataset/generators/jsongenerator.py	100.00% <100.00%> (ø)
randomdataset/schemaparser.py	94.73% <100.00%> (ø)

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more