[response-cache] document path for using SDL directive annotations for caching

[n1ru4l]

Apollo Server supports the @cacheControl(maxAge: 10) directive.

We can provide an optional path for users that use an SDL first flow.

[EmrysMyrddin]

Do we provide field level caching ? I don't find it in the documentation.

[EmrysMyrddin]

Oh yes found it, https://the-guild.dev/graphql/yoga-server/docs/features/response-caching#time-to-live-ttl