tiup: add TiUP DM introduction and docs for command dm-restart and dm-patch (#5325)#5370

ti-chi-bot merged 1 commit into

pingcap:release-5.0pingcap/docs:release-5.0from

ti-srebot:release-5.0-4abe9e6e445cti-srebot/docs:release-5.0-4abe9e6e445cCopy head branch name to clipboard