refactor: remove `type-fest` dependency

[angeloashmore]

Types of changes

• [ ] Chore (a non-breaking change which is related to package maintenance)
• [x] Bug fix (a non-breaking change which fixes an issue)
• [ ] New feature (a non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Description

This PR moves the PascalCase type from type-fest into the project. This allows us to remove type-fest as a dependency.

Fixes #120

Checklist:

• [ ] My change requires an update to the official documentation.
• [x] All TSDoc comments are up-to-date and new ones have been added where necessary.
• [x] All new and existing tests are passing.

🐰

[codecov-commenter]

Codecov Report

Merging #121 (6e0b077) into master (1355052) will not change coverage. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #121   +/-   ##
=======================================
  Coverage   92.25%   92.25%           
=======================================
  Files          16       16           
  Lines         271      271           
  Branches       60       60           
=======================================
  Hits          250      250           
  Misses          5        5           
  Partials       16       16           

Impacted Files	Coverage Δ
src/SliceZone.tsx	86.95% <100.00%> (ø)
src/lib/pascalCase.ts	80.00% <100.00%> (ø)

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[github-actions[bot]]

size-limit report 📦

Path	Size
dist/index.mjs	4.08 KB (0%)
dist/index.cjs	5.74 KB (0%)