adding upstream remote commands

[kinghat]

possible to add upstream remote commands to gitlens? these off the top of my head but there are others:
git remote add upstream, git fetch upstream, git rebase upstream/master or git merge upstream/master
as @KamasamaK on slack pointed out that VSCode is implementing some and not sure when:
microsoft/vscode#60640
and im not sure if this is a comprehensive list of that PR?:
microsoft/vscode#60640 (comment)