Add Hapi.js middleware

Co-authored-by: Laszlo Takacs <laszlo.takacs@prerender.io>

The static-asset ignore list predates woff2 and other modern asset
formats. Matching is suffix-based, so '.woff' does not cover '.woff2',
and bot requests for woff2 fonts were forwarded to the Prerender
service instead of passing through. Verified live on prerender.io:
Googlebot requesting inter-*.woff2 received a 504 (normal UA: 200)
while .css/.js correctly bypassed.

- Add .woff2, .otf, .eot, .webp, .avif, .webmanifest to
  internals.extensionsToIgnore
- Fix isStaticAsset() to lowercase the pathname before matching; the
  contract mandates case-insensitive suffix matching (CONTRACT.md §3)
- Add tests: /fonts/inter.woff2 and /STYLES.CSS pass through

Part of coordinated propagation of prerender/integration-contract#1.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

…rn-static-assets

fix: ignore .woff2 and modern static-asset extensions