This PR introduces a new API, `unstable_noStore`, which will allow users to declaratively opt out of caching anywhere during static generation in the same way that you can specify `cache: 'no-store'` on a fetch call in Next.js.
An important caveat and difference from just calling `cookies()` to opt-out of static generation is that this won't opt you out when called from within `unstable_cache` and instead defers to the cache configuration to it.
```
import {unstable_noStore as noStore} from 'next/cache';
export default async function Component() {
noStore();
const result = await db.query(...);
}
```
