Set up Espressif tooling and Flash ESP-WHO onto ESP-EYE

[Niall Hunt]

As a first step of issue #12 we want to set up espressif's tooling for building and flashing firmware to the ESP32. The reasoning for this is due to the ESP-WHO sample project provided by espressif that runs on the ESP-EYE and can be modified to suit our needs. This may be able to be written using Mongoose OS however the ESP-WHO project uses camera firmware provided in the ESP-IDF sdk and so this would need to be rewritten.

Upsides

• Less dev time
• Easy to modify example project
• Camera reading and buffering handled by sdk

Downsides

• Different tooling and build cycle than other device
• Much more work to do OTA updates if needed