studio: missing "description" in the published presentation

[peterpeterparker]

The existing starter kit field {{DECKDECKGO_DESCRIPTION}} is not filled during the publishing.

TODO:

Extend data with a description field and parse it

export interface ApiDeck {
    id?: string;
    slides: ApiSlide[];
    name: string;
    description: string; // <------------ NEW
    owner_id: string;
    attributes?: DeckAttributes;
    background?: string;
}

In the app, the field is currently limited to 500 characters and is optional. If it would not be set, then the app/frontend will provide the name as description.

P.S.: "Descriptions" are a needed for SEO and share purposes