Enables support for Hydrogen v2 apps using the "Remix" preset. This initial support works with the Hydrogen demo store template unmodified, and all pages will use Edge functions.
Node.js runtime, and also any other configuration via `export const config`, are not supported at this time, due to some pending blockers.
Apply the `regions` configuration (for both Edge and Node) and `memory`/`maxDuration` (only for Node) in a page's static config export, i.e.
```js
export const config = { runtime: 'edge', regions: ['iad1'] }
// or for Node
export const config = { runtime: 'nodejs', regions: ['iad1'], maxDuration: 5, memory: 3008 }
```
Similar to `runtime`, these config values can be inherited from a parent layout route to apply to all sub-routes. Routes with common config settings get placed into a common server bundle, meaning that there may now be more than 2 functions created (previously was one Edge, one Node), allowing for more granularity between the server build bundles.
