Create a Brand Narrative for Starshot

Should this be a subissue of #3454526: [META] Track 2: Starshot product marketing section → ?

In person discussion raised that this is not really a subset but more an over-arching thing that covers #3454525: [META] Track 1: Update Drupal.org for Drupal Starshot → and #3454526: [META] Track 2: Starshot product marketing section → and also informs #3454527: [META] Track 3: Drupal Starshot documentation → .