feat: allow renaming of properties and functions

[smyrick]

Fixes #248

Use @GraphQLName to set the name of fields in the schema, not just type names

[codecov]

Codecov Report

Merging #272 into master will increase coverage by 0.01%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master     #272      +/-   ##
============================================
+ Coverage     96.81%   96.82%   +0.01%     
  Complexity      196      196              
============================================
  Files            61       61              
  Lines           691      694       +3     
  Branches        122      124       +2     
============================================
+ Hits            669      672       +3     
  Misses            9        9              
  Partials         13       13

Impacted Files	Coverage Δ	Complexity Δ
...expedia/graphql/generator/types/FunctionBuilder.kt	100% <100%> (ø)	13 <0> (ø)	⬇️
...expedia/graphql/generator/types/PropertyBuilder.kt	100% <100%> (ø)	3 <0> (ø)	⬇️
...edia/graphql/generator/types/InputObjectBuilder.kt	100% <100%> (ø)	3 <0> (ø)	⬇️
...raphql/generator/extensions/kPropertyExtensions.kt	100% <100%> (ø)	0 <0> (ø)	⬇️
...raphql/generator/extensions/kCallableExtensions.kt	100% <100%> (ø)	0 <0> (ø)	⬇️

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