Pre-render pipeline performance / configurability improvements

There are a few opportunities that have already been identified to improve our pre-render pipeline:
- [ ] Configurable concurrency via CLI flag.
- [ ] Deduping RSC requests by extract RSC payloads from HTML responses.
- [ ] Add informational logs when a server is started for pre-rendering.
- [x] Replace Wrangler with Vite for builds.
- [ ] Improving the performance for `resolveParentParams` lookups.