+1 on this idea!
If you have it stored in a Google Drive/OneDrive/Dropbox folder, it’s already set up to sync so you shouldn’t really need a plugin (like @psyguy mentioned).
With git, I’m doing this with GitHub now, but manually. You could set up a cron job (on Mac or Linux, maybe through Windows Linux subsystem), or Task Scheduler in Windows - but a plugin would be a smoother process. You could set the commits to be the date (optional time if it’s more than once a day) with a generic message like “2020-08-02: daily Obsidian sync” or similar. That’s not a great thing for code repos, but you could track changes easily as you make changes with all the .md files - along with your config changes and CSS if you use a theme.
With my setup, it’s pushed to a private repo so I have it all diff’ed and tracking all the changes along the way. This is helpful since I exported everything from Roam and redoing a lot of the tags vs. notes. It’s also nice if it’s kept up to date so I can read it on my phone in the GitHub app if I need to refer to something.