Autodetect hardware revision as far as possible

[amandel]

Not sure if this can be fully accomplished?

Testing if there is reading on IO34 can help? Can we detect if there are pull up resistors?

It is no blocker if we can not detect this fully but this could help in some situations:

• Upload the info to the web portal
• Reduce validity range of the distance sensors
• Communication for feedback and reports

[amandel]

With #191 we can already get some hardware information. We have no variable or bit set that describes the used hardware.