Plausibility check when loading configuration files.

[schneeer]

Is your feature request related to a problem? Please describe.

When loading pin_mapping.json, it can happen that the DTU settings are accidentally overwritten.
The DTU then no longer works and requires flashing with the ...factory...bin.

Describe the solution you'd like

It would be helpful here if the loaded file was checked for plausibility.
For example, the respective file could be queried for text such as “pin_mapping” or “config”.
So that not everyone has to redo their previously exported settings and since there are only 2 settings files, it is enough to check whether the wrong thing is in there.