Proposed commit log message:
```
New port: comms/py-esptool: Utility to communicate with Espressif ESP8266 & ESP32 chips
A Python-based, open source, platform independent, utility to communicate
with the ROM bootloader in Espressif ESP8266 & ESP32 chips.
WWW: https://github.com/espressif/esptool
Reviewed_by: koobs
Approved by: koobs (mentor)
Differential_Revision:
```