use a custom argumnent formatter that honors newlines
use a custom argumnent formatter that honors newlines

The new argumet formatter allows for meaningful file examples with
ethernet_config and wifi_config arguments. Normally, the parser
strips all whitespaces and the alternative raw formatter does not
wrap lines based on the console line length, so this custom parser
maintains line wrapping and default arg values, while also allowing
us to use newlines and tabs in the help text.

Also other misc help doc cleanup and suppress the wifi
country/revision args

Change-Id: I2c7a5c8d4b8edf52fe7ff380d5d2b5a9fddead3e
GitOrigin-RevId: 2310767b3ebd1db65317730486d86a3d9f5edfca

google-coral/coralmicro,google-coral/coralmicro,google-coral/coralmicro,google-coral/coralmicro,google-coral/coralmicro