[FEATURE REQUEST] Allow for adjusting tx power via serial console

[franzkruhm]

I see there is code in there to adjust attenuation in wifihandler.cpp, yet it doesn't seem to be in use and not exposed to serial configuration, unless I am mistaken.

The default 20dBm of the ESP32 seems overkill in small playspaces with little interference. It was also noted in various anecdotal reports (they were about finding optimal wifi AP configuration) that more tx power isn't always better depending on the local context (nearby interference, obstructions)

Whilst I do not have experience ESP32 experience, I'd assume it is fairly trivial to set up a variable like this to be adjusted via serial commands.

[unlogisch04]

Your not mistaken. That value is not changeable over serial. The intend of that integration of the limits was, to make the SlimeVR Trackers (officials) to comply to FCC..
While lowering the limit should probably not make a bad impact on it, making it possible to change the limit higher would be a bad idea.
I think in general it would be good to make this more accessible in the defines.h or board-config.