[Kotlin] Add hexagon

[waghanza]

Hi @jaguililla,

Would you mind to add (or consent that we add) hexagon in here ?

This project compare performance based on 3 routes :

• GET /, SHOULD return a successful status code and an empty string
• GET /user/:id, SHOULD return a successful status code and the id
• POST /user, SHOULD return a successful status code and an empty string

Regards,

[jaguililla]

Absolutely... Go ahead, I will review those routes to assure they behave as you expect, thanks for inviting me to join your benchmark :)