OTA Updates Using Captive Portal Improvements: Better HTTP Handling

[nfeuer]

Describe the solution you'd like Currently, it just reboots at the end of a successful update, which means the client is going to time-out eventually and doesn't give any feedback. So the client cant tell if the update actually worked or if something explode-rebooted

some reference links: https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/system/ota.html https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/system/app_image_format.html

Broken out from original OTA issue

[TimoWielink]

Also, need to look into interrupts from the Application Layer during OTA, Wifi keeps trying to connect and interrupts the upload of binary