New features: watchdog, status led, web server auth

[corgan2222]

New features: watchdog, status led, web server auth

Watchdog

• set WDT_TIMEOUT (sec) after this time the esp will reset if something hangs up

status LED on GPIO32:

• constant light=wifi conected
• slow blink: mqtt conected and waiting
• fast blink=conected to keyble

webserver auth

• set WEBSERVER_USER and WEBSERVER_PW. Default admin:admin
• remove keyble key from info page

[DaHype]

Thanks for the Improvement.