* [haskell-http-client] fix codegen issues
* ensure datatypeWithEnum is set on codegenParameter when is enum
* [haskell-http-client] fix isAlias + arrayModelType missing "datatype"
* [haskell-http-client] param.isListContainer is sometimes false for list types
* [haskell-http-client] gen MimeNoContent instances automatically
* [haskell-http-client] fix example-app and integration tests
* [haskell-http-client] update docs
