chore: migrate from semantic-release to changesets

[basilgood]

Migration Summary

This PR migrates cosmoz-utils from semantic-release to changesets.

Changes:

• ✅ Removed semantic-release, @semantic-release/changelog, @semantic-release/git
• ✅ Added @changesets/cli@^2.27.0
• ✅ Created .changeset/config.json with baseBranch: master
• ✅ Created initial changeset for the migration
• ✅ Updated CI workflow to use foundry.yml
• ✅ Added codecov artifacts to .gitignore
• ✅ Pinned @playwright/test to exact 1.60.0 (was ^1.60.0)
• ✅ Fixed use-persist.ts to match cosmoz-frontend version (removed debug console statements)

Notes:

• Default branch is master
• Package uses wtr --coverage for testing (web-test-runner with playwright from cfg)
• @playwright/test was already in devDependencies, pinned to exact version

Relates to FE-694