Add REST APIs capability

[whid-injector]

After discussing with some users, I think that add REST APIs to the core and then use them within a mobile app for Android & iOS would make WHID's usage even more easy.

https://github.com/bblanchon/ArduinoJson https://github.com/marcoschwartz/aREST

Something like the Wifi Pineapple connector app. https://play.google.com/store/apps/details?id=org.hak5.pineappleconnector&hl=en https://www.youtube.com/watch?v=2te89R8SMoM

Workflow:
- User installs mobile app
- Run it
- User gets list of available SSIDs or directly connect to the hidden one (straight from the app itself, without going everytime to wifi settings)
- User can now launch payloads, insert on-the-fly, etc.

[ChandraOrbit]

seems to have not been realized until now?