feat: SEO backend data (1/4)

internal/domain/author/authorRepositoryInterface.go

@@ -10,6 +10,7 @@ type Repository interface {
 	DeleteMovingCredits(id uint32, reassignTo *uint32) error
 	DeleteUncrediting(id uint32) error
 	AvatarUsage() (map[uint32]int, error)
+	FindByAvatar(imageID uint32) ([]Author, error)
 	ClearAvatar(imageID uint32) ([]uint32, error)
 	AssignAvatar(authorIDs []uint32, imageID uint32) error
 	RepointAvatar(fromImageIDs []uint32, toImageID uint32) (int, error)