make config changable with arguments (pins as arguments or i2c_config as argumen...

[todo]

https://github.com/maartennl2002/gyroLib-WIP/blob/4fd8b68871960538030f13c3ac12d9681906c291/src/code/I2C.cpp#L8-L11

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This issue was generated by todo based on a TODO comment in 4fd8b68. It's been assigned to @maartennl2002 because they committed the code.