Report MK4 board temperature in telemetry data

[Zappes]

As the owner of a Prusa Enclosure I want to monitor the xBuddy board temperature So that I can take measures when the temperature gets too high

Background

When printing high temperature filaments like PC Blend or Nylon in the enclosure, the temperature of the mainboard can get into ranges where proper functioning isn't guranateed anymore. I would like to be able to react to such a situation, e.g. by activating a cooling solution.

My ultimate goal is to control the behavior of my system using Home Assistant. The data source for that system is the PrusaLInk Integration which, in turn, is based on the telemetry data from PrusaLink. For that reason, the first step towards my goal would be the inclusion of the board temperature in the telemetry data.