Captive Portal and/Or Access Point on demand

**Describe the problem you have/What new integration you would like**
Add the possibility to start the `captive_portal` on demand from the `web_server` or even a GPIO pin.
Add the possibility do deactivate the `captive_portal` and start the `web_server` form the `captive_portal`
Make it possible to disconnect from a wifi network an start the ap with eighter the `web_server` or the `captive_portal`

**Please describe your use case for this integration and alternatives you've tried:**
Once you connected the device to a wifi network using the camptive portal there is no way to change to a different wifi network without shutting down the wifi the ESP is curently connected to, to force a start ot the ap and the captive portal.
Once connected to a wifi there is alo on way to make the device standalone anymore with using the ap insetead of connected to the wifi

**Additional context**

No files, tests, or entry points are identified in the request. Clarify the supported device behavior and the entry points for switching between the Wi-Fi connection, access point, web server, and captive portal before implementation; done should cover the requested transitions and their GPIO or web-server triggers.

Written by the indexing model from the issue text.