1. Fix wrong reason code in 'WIFI_EVENT_AP_STADISCONNECTED' event
2. cleanup in softAP for disconnecting connected station
3. Update examples to display reason while processing WIFI_EVENT_AP_STADISCONNECTED event
DHCP Option 114 provides a modern method of indicating a captive
portal redirect to DHCP client. This introduces Option 114 to
the DHCPS component as well as provides examples for usage.
This commit updates the visibility of various header files and cleans up
some unnecessary inclusions. Also, this commit removes certain header
include paths which were maintained for backward compatibility.
Feature note: Sets up a simple DNS server that answers all questions with the ESP softAP's IP as well as a HTTP server which redirects all requests to a captive portal welcoming page.
Triggers captive portal detection (log-in screen popup) for iOS, Android and Windows.
Includes example test for testing DNS redirect and HTTP redirect.
Closes https://github.com/espressif/esp-idf/issues/7099
Closes https://github.com/espressif/esp-idf/issues/4075
