 By Lucy Craymer and Alasdair Pal WELLINGTON Reuters -Labour leader Chris Hipkins was sworn in as New Zealands prime minister in a formal ceremony on Wednesday, following the resignation of outgoing Prime Minister Jacinda Ardern last week. The Labour party elected former COVID-19 Response and Police minister Hipkins, 44, to lead the party and the country on Sunday. Ardern, 42, resigned last week, saying she had no more in the tank to lead the country. Hundreds gathered in the grounds of Parl... 