Experiment: Use CMake to build MacOS in CI

[oskirby]

Description

In PR #3517 we added reasonably good support for building the VPN project on MacOS using CMake, but we stopped short of updating our CI to use it because it's not quite obvious how to get code-signing to work properly in CI. However, I didn't want to lose that work, so I have split off the CI changes into this PR.

Reference

Github pull request #3517 Github: #3479 (VPN-2186)

Checklist

• [ ] My code follows the style guidelines for this project
• [ ] I have not added any packages that contain high risk or unknown licenses (GPL, LGPL, MPL, etc. consult with DevOps if in question)
• [ ] I have performed a self review of my own code
• [ ] I have commented my code PARTICULARLY in hard to understand areas
• [ ] I have added thorough tests where needed

[codecov-commenter]

Codecov Report

Merging #3603 (e41513f) into cmake-macos (5f69923) will decrease coverage by 23.21%. The diff coverage is n/a.

@@               Coverage Diff                @@
##           cmake-macos    #3603       +/-   ##
================================================
- Coverage        62.59%   39.37%   -23.22%     
================================================
  Files              285      279        -6     
  Lines            17656    17456      -200     
  Branches          8821     9461      +640     
================================================
- Hits             11052     6874     -4178     
- Misses            4931     4982       +51     
- Partials          1673     5600     +3927     

Flag	Coverage Δ
functional_tests	26.59% <ø> (-1.15%)	:arrow_down:
lottie_tests	56.33% <ø> (ø)
qml_tests	12.85% <ø> (+1.62%)	:arrow_up:
unit_tests	34.80% <ø> (-38.65%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
tests/nativemessaging/helperserver.h	0.00% <0.00%> (-100.00%)	:arrow_down:
src/adjust/adjustfiltering.h	1.26% <0.00%> (-98.74%)	:arrow_down:
tests/unit/testfeature.cpp	13.67% <0.00%> (-86.33%)	:arrow_down:
tests/unit/testandroidmigration.cpp	16.57% <0.00%> (-83.43%)	:arrow_down:
tests/unit/testguide.cpp	18.11% <0.00%> (-81.11%)	:arrow_down:
tests/unit/testserveri18n.cpp	20.00% <0.00%> (-80.00%)	:arrow_down:
tests/unit/testtutorial.cpp	22.22% <0.00%> (-77.26%)	:arrow_down:
tests/unit/testlocalizer.cpp	23.07% <0.00%> (-76.93%)	:arrow_down:
tests/unit/testmodels.cpp	23.35% <0.00%> (-76.24%)	:arrow_down:
tests/auth/main.cpp	24.00% <0.00%> (-76.00%)	:arrow_down:
... and 147 more

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[bakulf]

Do you think we can finish this PR for 2.11? We should add to our roadmap.

[oskirby]

Superseded by #4821