Deep Sleep with wifi turned off and reconnect option

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

I want to use ESPHome in outdoor project (battery + solar panel), and I want to disable the RF before I go sleep to reduce of the wake up power consumption. So the wifi module must handle the wifi is disabled and re-enable it before the use.
If the reconnect option is true, the ESP will save the current connection parameter (bssid ,channel) in the RTC and when the wake signal received, automatically fast connect the last wifi settings (if not work do a network scan mode like OTA "safe mode")

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

I not see any option to do that from the current code.

**Additional context**

With these changes, ESPHome can reduce the power consumption. The idea come from https://www.bakke.online/index.php/tag/esp8266/ reduce power consumption series...

The request names no files, tests, or entry points. Start by locating ESPHome's deep-sleep and Wi-Fi handling, then compare the requested RTC-stored BSSID/channel reconnect behavior with the existing OTA safe-mode scan path. Done means Wi-Fi can be disabled before sleep and re-enabled with the requested fast reconnect fallback.

Written by the indexing model from the issue text.