Create example, user config param for apname and password plus

Often Requested

Create an example using custom params to display, save and read (flash) custom apname and password for wm ap mode.

Allow end user to change apname and password ( and other options ) via config page, implement via example not core code.

( just edit the customparams examples )

additional wm options

Allow end user to change other options via config page, save as wm config struct? captive portal, cp timeout, etc