style: fixes linting errors; adds SwiftLint as Xcode run script

[philprime]

No description provided.

[github-actions]

	Warnings
⚠️	Any changes to library code should be reflected in the Changelog. Please consider adding a note there.
⚠️	The library files were changed, but the tests remained unmodified. Consider updating or adding to the tests to match the library changes.

Generated by 🚫 Danger Swift against 510ade1

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 8 lines in your changes missing coverage. Please review.

Project coverage is 28.73%. Comparing base (3bc83c6) to head (510ade1).

Files	Patch %	Lines
Sources/OnLaunch/OnLaunch.swift	0.00%	4 Missing ⚠️
Sources/OnLaunch/SwiftUI/View+OnLaunch.swift	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #51      +/-   ##
==========================================
- Coverage   28.92%   28.73%   -0.20%     
==========================================
  Files           9        9              
  Lines         446      449       +3     
==========================================
  Hits          129      129              
- Misses        317      320       +3     

Flag	Coverage Δ
unittests	28.73% <0.00%> (-0.20%)	⬇️

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

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.