SHANGHAI (Reuters) - Starbucks Corp said on Friday it would launch a new all-day dining cafe in China which will serve a brunch menu and cocktails, as the world's largest coffee chain seeks to expand its retail offering in the increasingly competitive market.The opening of the cafe in the city of Shanghai comes as Starbucks has been facing slowing sales growth in its second-largest market amid pressure from a growing number of independent coffee shops and Chinese startups such as Luckin Coffee..