rc git: Support new `rebase` commands
rc git: Support new `rebase` commands

jjthrash/kakoune,Somasis/kakoune,lenormf/kakoune,jjthrash/kakoune,occivink/kakoune,lenormf/kakoune,casimir/kakoune,danr/kakoune,jjthrash/kakoune,mawww/kakoune,Somasis/kakoune,jkonecny12/kakoune,jjthrash/kakoune,jkonecny12/kakoune,lenormf/kakoune,Somasis/kakoune,alexherbo2/kakoune,mawww/kakoune,alexherbo2/kakoune,danr/kakoune,casimir/kakoune,Somasis/kakoune,mawww/kakoune,danr/kakoune,danr/kakoune,lenormf/kakoune,casimir/kakoune,occivink/kakoune,alexherbo2/kakoune,jkonecny12/kakoune,occivink/kakoune,jkonecny12/kakoune,mawww/kakoune,alexherbo2/kakoune,occivink/kakoune,casimir/kakoune