Potentially value range restriction in home assistant auto discovery

[mraction]

In commit f095ee7 is a new range check added, that allows only values, between INT32_MIN and INT32_MAX for min/max values in the home assistant auto discovery message.

The problem is, that in https://github.com/toniebox-reverse-engineering/teddycloud/blob/master/src/settings.c are also bigger ranges are defined (for example UINT64_MAX).

Currently that is not a problem, because all these settings are internal and not publishes via mqtt, but for the future it could be a problem, because this restriction is not really visible to the developer while adding new settings.

[mraction]

@g3gg0 I think you might be interested in this.