Before Deep sleep enter send action to ha

**Describe the problem you have/What new integration you would like**
Hello.
it is possible to implement a function that would send the function to the home assistant just before starting deep sleep and only then disconnect the wifi.

Something similar to the on_shutdown function, which, however, is not completely reliable, sometimes sends and sometimes does not send a command via wifi.

something along the lines of:
```
if:
condition
deep_sleep.before_enter: component_name
then:
switch.turn_on: ...
```

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

**Additional context**

Review the existing on_shutdown behavior and the deep-sleep lifecycle, focusing on when Wi-Fi disconnects and deep sleep begins. Define how a before-enter action would be invoked and how completion would be confirmed; done means the Home Assistant command is sent reliably before disconnection and deep sleep.

Written by the indexing model from the issue text.