Add customLaunchCommand attribute to the launch action

[pepicrft]

Short description 📝

As described here the new version of Xcode has a new feature that is disabled by default, using a custom command to launch a commandn line tool.

Solution 📦

Add the customLaunchCommand attribute to LaunchAction.

Implementation 👩‍💻👨‍💻

• Add the custom case to the LaunchAction.Style enum.
• Add the customLaunchCommand attribute to XCScheme.LaunchAction.
• Decode and encode the new attribute.
• Update the == method to include the new attribute.

[codecov]

Codecov Report

Merging #451 into master will decrease coverage by 0.02%.
The diff coverage is 44.44%.

@@            Coverage Diff             @@
##           master     #451      +/-   ##
==========================================
- Coverage   80.43%   80.41%   -0.03%     
==========================================
  Files         149      149              
  Lines        7652     7659       +7     
==========================================
+ Hits         6155     6159       +4     
- Misses       1497     1500       +3

Impacted Files	Coverage Δ
...urces/xcodeproj/Scheme/XCScheme+LaunchAction.swift	58.03% <44.44%> (-0.04%)	⬇️

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[codecov]

Codecov Report

Merging #451 into master will decrease coverage by 0.01%.
The diff coverage is 71.42%.

@@            Coverage Diff             @@
##           master     #451      +/-   ##
==========================================
- Coverage   80.95%   80.94%   -0.02%     
==========================================
  Files         147      147              
  Lines        7588     7592       +4     
==========================================
+ Hits         6143     6145       +2     
- Misses       1445     1447       +2

Impacted Files	Coverage Δ
Tests/xcodeprojTests/Scheme/XCSchemeTests.swift	100% <100%> (ø)	⬆️
...urces/xcodeproj/Scheme/XCScheme+LaunchAction.swift	58.54% <55.55%> (+0.48%)	⬆️

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[kwridan]

👍

We could add it to one of the fixtures to ensure it's covered