Add ability to add sensor types to BigQuery dataset via CLI

[cortadocodes]

Summary

Add the ability to add sensor types to the BigQuery dataset via the CLI.

Note: For some reason, the coverage calculations showing on this PR are incorrect e.g. packet_reader.py is untouched.

Contents (#40)

New features

• Add add-sensor-type CLI command

Enhancements

• Convert CLI log messages to print statements

Fixes

• Add "Diff_Baros" sensor type to BigQuery sensor mapping

Operations

• Add add-sensor-type cloud function deployment to cloudbuild.yaml

Dependencies

• Loosen python-slugify dependency

Testing

• Factor out repeated environment patching in test classes

Quality Checklist

• [ ] New features are fully tested (No matter how much Coverage Karma you have)
• [ ] [v0.2 onward] New features are included in the documentation
• [ ] [v0.2 onward] Breaking changes are documented with clear instructions of what

Coverage Karma

• [ ] If your PR decreases test coverage, do you feel you have built enough Coverage Karma* to justify it?

*Coverage Karma can be earned by disproportionally increasing test coverage in the rest of your contributions. It's an honesty policy - you keep count of your own.

[codecov-commenter]

Codecov Report

Merging #40 (72eaf93) into main (edf6292) will decrease coverage by 14.73%. The diff coverage is 83.20%.

@@             Coverage Diff             @@
##             main      #40       +/-   ##
===========================================
- Coverage   93.94%   79.21%   -14.74%     
===========================================
  Files          12       13        +1     
  Lines         661      741       +80     
===========================================
- Hits          621      587       -34     
- Misses         40      154      +114     

Impacted Files	Coverage Δ
data_gateway/packet_reader.py	45.77% <56.33%> (-46.31%)	:arrow_down:
data_gateway/routine.py	93.87% <88.88%> (-6.13%)	:arrow_down:
data_gateway/cli.py	89.58% <93.75%> (-1.46%)	:arrow_down:
data_gateway/data_gateway.py	94.62% <94.62%> (ø)
data_gateway/persistence.py	94.53% <95.83%> (-0.82%)	:arrow_down:
data_gateway/__init__.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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