Extending application/json with an optional Scope

[blast-hardcheese]

A stub for now, but wiring through the scope parameter to ApplicationJson to enable #1120

[codecov]

Codecov Report

Merging #1490 (b659f8c) into master (07a2a30) will increase coverage by 0.06%.
The diff coverage is 75.71%.

@@            Coverage Diff             @@
##           master    #1490      +/-   ##
==========================================
+ Coverage   83.28%   83.34%   +0.06%     
==========================================
  Files          88       88              
  Lines        5510     5507       -3     
  Branches      142      147       +5     
==========================================
+ Hits         4589     4590       +1     
+ Misses        921      917       -4     

Impacted Files	Coverage Δ
...yncHttpClient/AsyncHttpClientClientGenerator.scala	94.27% <50.00%> (+0.28%)	⬆️
...s/scala/dropwizard/DropwizardServerGenerator.scala	83.48% <50.00%> (ø)
...ail/generators/scala/akkaHttp/AkkaHttpHelper.scala	70.37% <66.66%> (ø)
...tors/java/springMvc/SpringMvcServerGenerator.scala	90.32% <70.00%> (+1.43%)	⬆️
...ators/scala/akkaHttp/AkkaHttpServerGenerator.scala	91.14% <71.42%> (ø)
...a/dev/guardrail/java/helpers/ResponseHelpers.scala	89.47% <75.00%> (ø)
.../dev/guardrail/scala/helpers/ResponseHelpers.scala	89.47% <75.00%> (ø)
...rs/java/dropwizard/DropwizardServerGenerator.scala	94.71% <88.88%> (ø)
...ators/scala/akkaHttp/AkkaHttpClientGenerator.scala	94.15% <100.00%> (ø)
...enerators/scala/http4s/Http4sClientGenerator.scala	92.59% <100.00%> (ø)
... and 1 more

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