http json to grpc conversion

[Karunam Goyal]

Hi, 

I have a requirement to convert JSON to proto format which of course Envoy proxy does but i have to make few specific changes based on my project in it and develop on top of it.

So I wanted to know how should I go about it and which part in the GitHub repo I should look at.

I am kinda stuck at this problem. So your help will be much appreciated.

Thank you