MPHO RANTAO TWO of Africa’s biggest stars, Rotimi and Vanessa Mdee, entered the new year on a high, with the announcement of their engagement.  The Atlanta-based couple have been together for over a year, having met at the 2019 Essence Festival in New Orleans where Rotimi was due to perform.  The Nigerian-American actor (born Olurotimi Akinosho) dropped down on one knee in a ‘Coming 2 America’ setting on December 31, asking his Tanzanian singer girlfriend to marry him. Rotimi and Vanessa Mdee on video. Picture: Instagram The actor posted the video of the proposal on his Instagram page with the…