By Lisandra Paraguassu BRASILIA (Reuters) – Brazil’s President-elect Luiz Inacio Lula da Silva will offer to host a future global climate change summit when he attends the COP27 United Nations climate conference in Egypt next week, sources told Reuters on Wednesday. Lula plans to announce an overhaul of Brazil’s environmental policies at the summit in Sharm El Sheikh and the creation of a new national climate authority to oversee efforts by all ministries and agencies to combat global warming. The sources, that requested anonymity to be able to speak freely, said Lula will invite the United Na…