[BUG] `nameInCamelCase` generates property in `PascalCase`

[jnnwnk]

Bug Report Checklist

Description

There is an attribute called nameInCamelCase in class CodegenProperty. For C# server side generation this results in a name in pascal case. This works for us because we were looking for pascal case anyway, but the name nameInCamelCase is at least misleading.

Input	Expected output as camel case	Actual output as camel case
myVariableName	myVariableName	MyVariableName

openapi-generator version

3.0.3

OpenAPI declaration file content or url

https://gist.github.com/jnnwnk/6ee8d7c2102725aa367fc2135648027a

Command line used for generation

java -jar .\openapi-generator-cli-3.0.3.jar generate -i .\openapi.json -g aspnetcore -c .\config.json -o .\output\ -t .\templatesNetCore\

Steps to reproduce

• Place model.mustache in folder templatesNetCore
• Execute command line
• See generated name of property in MySampleObject.cs

Related issues/PRs

#3827

Suggest a fix

There two options:

• Fix naming in code (call attribute nameInPascalCase instead of nameInCamelCase)
• Fix implementation, so when using nameInCamelCase the generated attribute / property will be using the correct case

Actually it would be nice to have the choice between the well known cases (camelCase, PascalCase, snake_case, SNAKE_CASE_ALL_CAPS, kebap-case). See link for examples. But this might be a feature request instead of a bug.

[JRAndreassen]

Similar issue with Camel Case...

Input	Desired output as snake case	Actual output as snake case
IPv4Address	ip_v4_address	I_PV4_ADDRESS
IPv6Address	ip_v6_address	I_PV6_ADDRESS
APIGet	api_get	a_pi_get

  "openApiType" : "string",
  "baseName" : "IPv4Address",
  "nameInCamelCase" : "IPv4Address",
  "nameInSnakeCase" : "I_PV4_ADDRESS",

  "baseName" : "IPv6Address",
  "nameInCamelCase" : "IPv6Address",
  "nameInSnakeCase" : "I_PV6_ADDRESS",

operationId: APIGet -> "operationId" : "a_pi_get",