Add Occupancy Counter based on I2C Thermal Sensor AMG88xx

**Describe the problem you have/What new integration you would like**

The [amg88xx thermal sensor](https://learn.adafruit.com/adafruit-amg8833-8x8-thermal-camera-sensor?view=all) is an [affordable](https://www.digikey.com/product-detail/en/adafruit-industries-llc/3538/1528-2409-ND/7725296), powerful I2C sensor that can be used in many ways. One integration I'm looking at specifically is a room occupancy counter. An ESP32 with an amg88xx sensor, mounted above a doorway pointed down, can count the number of people that walk INTO and OUT OF a room.

I fount this [pedestrian counter repo](https://github.com/CityofEdmonton/pedestrian-counter) on Github that initially piqued my interest in this.

**Please describe your use case for this integration and alternatives you've tried:**

A powerful room occupancy counter that integrates with Home Assistant to provide accurate occupancy detection.

**Additional context**