Send sensor stop commands on gateway exit

[cortadocodes]

Contents (#39)

Note: the coverage calculation is again wrong on this PR (I'll be looking into this with CodeCov)

Enhancements

• Store available sensor commands in Configuration
• Send sensor stop commands on exit of DataGateway by default
• Add CLI option to not stop sensors on gateway exit
• Clarify gateway stop message

Fixes

• Apply log handler to multiprocessing logger in DataGateway instantiation instead of at data_gateway module import time to avoid unnecessary logs when using gateway start CLI command

[codecov-commenter]

Codecov Report

Merging #39 (f27d84e) into main (edf6292) will decrease coverage by 15.04%. The diff coverage is 81.05%.

@@             Coverage Diff             @@
##             main      #39       +/-   ##
===========================================
- Coverage   93.94%   78.89%   -15.05%     
===========================================
  Files          12       13        +1     
  Lines         661      763      +102     
===========================================
- Hits          621      602       -19     
- Misses         40      161      +121     

Impacted Files	Coverage Δ
data_gateway/packet_reader.py	48.06% <61.95%> (-44.02%)	:arrow_down:
data_gateway/data_gateway.py	87.61% <87.61%> (ø)
data_gateway/routine.py	93.87% <88.88%> (-6.13%)	:arrow_down:
data_gateway/cli.py	89.69% <93.93%> (-1.35%)	:arrow_down:
data_gateway/persistence.py	94.53% <95.83%> (-0.82%)	:arrow_down:
data_gateway/__init__.py	100.00% <100.00%> (ø)
data_gateway/configuration.py	100.00% <100.00%> (ø)
data_gateway/dummy_serial/dummy_serial.py	91.42% <0.00%> (-2.86%)	:arrow_down:

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