DO NOT MERGE: additional ventilation modes

[martukas]

There is no intention to merge this.

This PR is here to make diffs and discussions about this code more convenient.

The goal is to refactor it some more in this branch and then introduce changes into master using more granular PRs

• improved breath detection implementation
• expanded comms protocol
• more generalized/nested PID architecture
• each mode as a separate well-codumented PR

[CLAassistant]

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1 out of 2 committers have signed the CLA.

✅ martukas
❌ subhashr2
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[codecov]

Codecov Report

Merging #1270 (97c0003) into master (97c0003) will not change coverage.
The diff coverage is n/a.

❗ Current head 97c0003 differs from pull request most recent head f5592f8. Consider uploading reports for the commit f5592f8 to get more accurate results

@@           Coverage Diff           @@
##           master    #1270   +/-   ##
=======================================
  Coverage   51.55%   51.55%           
=======================================
  Files         101      101           
  Lines        4056     4056           
  Branches      278      278           
=======================================
  Hits         2091     2091           
  Misses       1965     1965           

Flag	Coverage Δ
common	51.14% <0.00%> (ø)
controller	56.70% <0.00%> (ø)
gui	28.05% <0.00%> (ø)

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