perf(core)!: make TemplateParamsPlugin opt-in

[harlan-zw]

🔗 Linked issue

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality)
• ✨ 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

This change drops the template param plugin from being part of the core Unhead.

While the feature is useful in some cases, it's not useful for everyone and us contributing ~15% of the server build. It is also contributing about 20% of the time for the ssr-harlanzw-no-schema-e2e benchmark.

For these reasons, users will need to opt in if they'd like to use it.

import { TemplateParamsPlugin } from 'unhead/plugins'

createHead({
  plugins: [TemplateParamsPlugin]
})

[github-actions]

Bundle Size Analysis

File	Size	Gzipped Size	Size Diff	Gzipped Size Diff
Client	11 kB (11282 B)	4.5 kB (4618 B)	-12.09% (-1552 B)	-10.45% ( -539 B)
Server	8.4 kB (8571 B)	3.4 kB (3525 B)	-15.23% (-1540 B)	-13.43% ( -547 B)