By Elaine Lies TOKYO (Reuters) -Japanese LGBTQ rights activists on Wednesday hailed Tokyo’s move to introduce a same-sex partnership system as a huge step in their fight for equality in the only G7 country that does not fully recognise same-sex marriage. Under plans announced by Tokyo governor Yuriko Koike on Tuesday, partnerships would be allowed early next year and made legal in the fiscal year beginning April 2022, vastly expanding the number of people in Japan who can benefit. The partnership system allows same-sex partners to register their relationship and gain some of the privileges enj…