CODEOWNERS: Assign clustermesh-apiserver code to @cilium/sig-clustermesh
CODEOWNERS: Assign clustermesh-apiserver code to @cilium/sig-clustermesh

Signed-off-by: Alexandre Perrin <60c6d277a8bd81de7fdde19201bf9c58a3df08f4@kaworu.ch>

cilium/cilium,cilium/cilium,cilium/cilium,michi-covalent/cilium,cilium/cilium,michi-covalent/cilium,michi-covalent/cilium,cilium/cilium,michi-covalent/cilium,michi-covalent/cilium