Arduino configuration allows selecting wrong pins for components

[VinArt]

Describe the bug When configuring a component for arduino it is possible to:

• select the same pin number for different outputs (or inputs) of the component like this:
• select the same pin number for different components like this:
• select unsuitable pins (for example for analog output it is possible to select pins that do not support PWM) see image above.

To Reproduce Steps to reproduce the behavior:

1. Go to configuration tab of an arduino robot
2. Select unsuitable pins

Expected behavior

• Either a message should be shown that the pin is in use, or available pin set should be reduced
• Unusable pins should not appear in the list at all

Additional context

756 is related

[VinArt]

From Arduino reference

On most Arduino boards (those with the ATmega168 or ATmega328P), this function works on pins 3, 5, 6, 9, 10, and 11. On the Arduino Mega, it works on pins 2 - 13 and 44 - 46. Older Arduino boards with an ATmega8 only support analogWrite() on pins 9, 10, and 11.

[bjost2s]

In general we haven't implemented a checker for the use of pins so far. The idea was to do it on server side, because there we do it also for the "old" configuration.

[rbudde]

a job for a configuration checker

[bjost2s]

see #114