dnsmasq fixes and giving firmware spoofing its own option.

[sideup66]

Some minor fixes to the dnsmasq script since first upgrading to newer firmware. Includes detection for onboard wyze version of dnsmasq (slightly newer at the time of this commit) than wz_mini, also modifies the script to be a little smarter for resolv.conf detection.

Finally this pull gives firmware spoofing its own script. This should avoid problems should a user decide to update and potentially avoid any cloud problems with communicating with wyze services, if they are used.