ESP32 presence detection with ESP-CSI

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

A new way of human detection was presented https://github.com/espressif/esp-csi It would be interesting to use this as a sensor for presence detection to overcome the problem with PIRs and stationary objects.

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

N/A

**Additional context**

- https://stevenmhernandez.github.io/ESP32-CSI-Tool/
- https://www.youtube.com/watch?v=tFxKUzEDSdw

No repository files, tests, or entry points are named. Start by reviewing the linked ESP-CSI resources and determine the integration scope, then define how ESP-CSI presence data would become a usable presence sensor alongside the requested PIR alternative.

Written by the indexing model from the issue text.