message: Changeset catalog model and docs
diff: ---
  '@backstage/catalog-model': patch
  '@backstage/plugin-scaffolder': patch
  +'@backstage/plugin-catalog-backend': patch
  +'@backstage/plugin-scaffolder': patch
  +'@backstage/plugin-scaffolder-backend': patch
  ---
  Add Owner field in template card and new data distribution
  +Add spec.owner as optional field into TemplateV1Alpha and TemplateV1Beta Schema
  +Add relations ownedBy and ownerOf into Template entity
  +Template documentation updated
  