docs: tracking missing reference documentation

[SeanCassiere]

Reference page missing documentation

Using, this to track the missing reference page documentation.

This is what's missing, and I'll cross (x) them out once I've written the documentation for them.

### Missing pages
- [x] createRootRouteWithContext
- [x] createLazyRoute
- [x] createLazyFileRoute
- [x] useLoaderDeps
- [x] useRouterState
- [x] useRouter
- [x] useLinkProps
- [x] useRouteContext
- [x] useSearch