* weak hook early_setup() #2111#2133#2136
* rename to early_init (more "c" vs early_setup which is more "c++arduino")
* example
* improve earlyWiFi example, slightly change AddrList interface, move WiFi sketches into WiFi examples
* fix CI
* fix local CI runner
* fix local CI runner
* rename early_init() to preinit()
* + static ESP8266WiFiClass::preinit_wifi_off()
* update early disable wifi example
* example update
* IPv6 example update
* Update ESP8266WiFiGeneric.h
camelCase for static method name
* Update ESP8266WiFiGeneric.cpp
camelCase for static method name
* Update EarlyDisableWiFi.ino
Expand comment, fix static method name
* Update core_esp8266_main.cpp
Expanded comment.
* Update core_esp8266_main.cpp
Expanded comment
* Update EarlyDisableWiFi.ino
Expanded comment