⚙️ Add separate .swiftlint file to tests

[swiftyfinch]

Description

I've added a separate .swiftlint file to Tests folder to use more lenient rules in tests.

References

• https://github.com/realm/SwiftLint#using-multiple-configuration-files

Checklist (I have ...)

• 🧐 Followed the code style of the rest of the project
• 📖 Updated the documentation, if necessary
• 👨🏻‍🔧 Added at least one test which validates that my change is working, if appropriate
• 👮🏻‍♂️ Run make lint and fixed all warnings
• ✅ Run make test and fixed all tests

❤️ Thanks for contributing to the 🏈 Rugby!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ecb0302) 33.29% compared to head (e5eb5c3) 33.29%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #285   +/-   ##
=======================================
  Coverage   33.29%   33.29%           
=======================================
  Files         142      142           
  Lines        4163     4163           
=======================================
  Hits         1386     1386           
  Misses       2777     2777           

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