docs(icon-toggle): Add deprecation notice to README (#2766)
docs(icon-toggle): Add deprecation notice to README (#2766)

BREAKING CHANGE: The icon-toggle package has been deprecated. The functionality was moved to the icon-button package. Please refer to the icon-button readme for changes and how to update.

material-components/material-components-web,material-components/material-components-web,material-components/material-components-web