add section for clients/sdk

Repman provides an API that can be consumed by diffrerent clients.

Adding a section to highlight community built clients/sdk would be a great highlight on different ways to consume the api and provide diffrerent use cases on how to utilize Repman services 

Here is a Laravel client

https://github.com/alphaolomi/laravel-repman

Fully configarable with on cloud or self hosted repman intance