fix: externalize CSSProperties types

[BobbieGoede]

🔗 Linked issue

❓ Type of change

• 📖 Documentation (updates to the documentation, readme or JSDoc annotations)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

The types extending or using CSSProperties interface types are somehow being inlined, increasing the build size significantly. For some reason adding type annotations seems to prevent this from happening, it's not pretty but saves a lot of space.

📝 Checklist

• I have linked an issue or discussion.
• I have added tests (if possible).
• I have updated the documentation accordingly.

[pkg-pr-new]

Open in Stackblitz

npm i https://pkg.pr.new/@vueuse/motion@255

commit: c83fc77

[pkg-pr-new]

Open in Stackblitz

npm i https://pkg.pr.new/@vueuse/motion@255

commit: 43221cb

[BobbieGoede]

The changes in this PR likely reintroduce #228, I am unable to test it as the reproduction has expired..