Add support for machines and form names

[sargunv]

plus a bit of non-breaking refactoring, mostly in tests

[codecov[bot]]

Codecov Report

Merging #77 into master will increase coverage by 0.13%. The diff coverage is 73.07%.

@@             Coverage Diff              @@
##             master      #77      +/-   ##
============================================
+ Coverage     65.35%   65.49%   +0.13%     
  Complexity      106      106              
============================================
  Files            19       19              
  Lines           866      881      +15     
  Branches          3        3              
============================================
+ Hits            566      577      +11     
- Misses          299      303       +4     
  Partials          1        1              

Impacted Files	Coverage Δ	Complexity Δ
...rgunvohra/lib/pokekotlin/client/RxPokeApiClient.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...sargunvohra/lib/pokekotlin/client/PokeApiClient.kt	97.05% <50.00%> (-0.95%)	98.00 <1.00> (+1.00)	:arrow_down:
...lin/me/sargunvohra/lib/pokekotlin/model/Machine.kt	80.00% <80.00%> (ø)	4.00 <4.00> (?)
...lin/me/sargunvohra/lib/pokekotlin/model/utility.kt	52.17% <80.00%> (ø)	0.00 <0.00> (?)
...otlin/me/sargunvohra/lib/pokekotlin/model/items.kt	80.43% <100.00%> (+0.43%)	0.00 <0.00> (ø)
...otlin/me/sargunvohra/lib/pokekotlin/model/moves.kt	62.35% <100.00%> (+0.44%)	0.00 <0.00> (ø)
...lin/me/sargunvohra/lib/pokekotlin/model/pokemon.kt	69.47% <100.00%> (+0.12%)	0.00 <0.00> (ø)

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