This is importent to ease the possibility of using EMBED_TXTFILES to
embed the .pem certificate into the image.

Phy support was moved to main/network/broken/ethernet_lan8720.cpp and
thus excluded from the build. Using it will provide linking errors, but
since I intend to find a fix for it shortly I wand to keep the impact of
this commit to the qthing api as little as possible.

This ensures compability with e.g. the ttgo lora esp32 module utilizing
a 26MHz quartz.

This also automatically configures the ESP to run at full power when
leds are configured.

make qthing ready for NixOS

See merge request !10

Adding callbacks to UDP server

See merge request !9