[magnum][tc] Proposing Jake Yip for core-reviewer

Dear all, I would like to nominate Jake Yip for core reviewer in the magnum project. Jake has been doing code reviews for the past years in magnum at a steady rate and is running magnum as well in their organization. With very good knowledge of the magnum codebase, I am confident that Jake will help increase the pace of development in the project. Cheers, Spyros