feat(shorebird_cli): warn on low link percentages

[felangel]

Description

• feat(shorebird_cli): warn on low link percentages

Type of Change

• ✨ New feature (non-breaking change which adds functionality)
• 🛠️ Bug fix (non-breaking change which fixes an issue)
• ❌ Breaking change (fix or feature that would cause existing functionality to change)
• 🧹 Code refactor
• ✅ Build configuration change
• 📝 Documentation
• 🗑️ Chore

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (22a17a9) to head (b1a1f14).
Report is 1 commits behind head on main.

❗ Current head b1a1f14 differs from pull request most recent head 54d4101. Consider uploading reports for the commit 54d4101 to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #1832   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          173       173           
  Lines         5455      5472   +17     
=========================================
+ Hits          5455      5472   +17     

Flag	Coverage Δ
shorebird_cli	100.00% <100.00%> (ø)

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