Migration to @mui/material v7

[Sean-Idox-ADS]

@webzep is there any time line as to when this is going to be updated to work with @mui/material v7? We are needing to upgrade our application to v7 of @mui and at present this is preventing us from doing this.

[steviebuilds]

Hey @Sean-Idox-ADS

Unfortunately I don't have time to spend on this anymore.

If you or anyone else would like to create a PR and make sure it's backward compatible, then I can check it out in the next couple days.

[requinDr]

I've been using this package with the latest mui material forever, currently "@mui/material": "^7.3.4". I've had no issue, but it doesn't mean there aren't any.

You can add this at the end of your package.json @Sean-Idox-ADS then install @mui/material v7 and test

	"overrides": {
		"mui-nested-menu": {
			"@mui/material": ">=5.0.0"
		}
	}