Arduino Utils

[leloup314]

This PR adds (and reorganizes) Arduino-based utils with firmware, software and examples.
The SiLab relay board HL was renamed from Arduino.py to arduino_relay_board.py.
The following Arduino-based utils are added:

• SerialToI2C (basil/HL/arduino_serial_to_i2c.py): A HL allowing to interface an I2C bus using the Arduino over serial
• NTCReadout (basil/HL/arduino_ntc_readout.py): A HL allowing to read out up to 8 NTCs in a voltage divider configuration

The corresponding firmware is found in basil/firmware/arduino

[codecov]

Codecov Report

Merging #179 (95c9742) into master (37d6ed8) will decrease coverage by 0.71%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #179      +/-   ##
==========================================
- Coverage   38.82%   38.10%   -0.72%     
==========================================
  Files          74       77       +3     
  Lines        4886     4978      +92     
==========================================
  Hits         1897     1897              
- Misses       2989     3081      +92     

Impacted Files	Coverage Δ
basil/HL/arduino_base.py	0.00% <0.00%> (ø)
basil/HL/arduino_ntc_readout.py	0.00% <0.00%> (ø)
basil/HL/arduino_relay_board.py	0.00% <0.00%> (ø)
basil/HL/arduino_serial_to_i2c.py	0.00% <0.00%> (ø)

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[themperek]

For me is fine. If you remove the draft it can go I guess.

[leloup314]

Is still need to write some docs and push some changes, when I am done, I mark as ready

[leloup314]

Go time