## Summary
This enables routing the React Dev Tools through a remote server by
being able to specify host, port, and path for the client to connect to.
Basically allowing the React Dev Tools server to have the client connect
elsewhere.
This setups a `clientOptions` which can be set up through environment
variables when starting the React Dev Tools server.
This change shouldn't affect the traditional usage for React Dev Tools.
EDIT: the additional change was moved to another PR
## How did you test this change?
Run React DevTools with
```
$ REACT_DEVTOOLS_CLIENT_HOST=<MY_HOST> REACT_DEVTOOLS_CLIENT_PORT=443 REACT_DEVTOOLS_CLIENT_USE_HTTPS=true REACT_DEVTOOLS_PATH=/__react_devtools__/ yarn start
```
Confirm that my application connects to the local React Dev Tools
server/instance/electron app through my remote server.
c0060cf2a6