Add option to generate Sttp code to Postman

[mmatloka]

Postman allows to generate code from given http call. Currently it does not support any Scala library, it would be nice to generate Scala+Sttp code. Contribution would need to be made in https://github.com/postmanlabs/postman-code-generators .

[parvdave]

Hey @mmatloka I can pick this issue up.
Is there already an issue on the postman-code-generators repo related to this change or should we create one?
cc: @adamw

[parvdave]

Hey @mmatloka, I'll create a ticket on the postman-code-generators repository for this change