Inspector V2 Proxy Spec

# Inspector V2 Proxy Spec

## `config` Endpoint 
### GET
  - Serves a JSON config shape
    - Minimizes environment variable config for client config
    - Use a validatable JSON config file
 ### POST
  - Can also write the same validated shape 
    - e.g., The client can add a new server configuration or store startup preferences

### More to come ...