The new course overview page introduces a numeric badge to indicate new content. For example, it can indicate how many forum posts are unread or how many submissions need grading.

To prevent each plugin from being too creative, this issue will implement a generic core renderer method to generate this kind of pill badge with a number inside. This will allow themes to customize the badges easily.

Technical shaping

There is an implementation proposal in this proof of concept commit: https://github.com/ferranrecio/moodle/commit/bbc8227223cef976788a9b8d5517ce7416a46bd0#diff-776bae453cd4ec196f372790e50b8badce51dc365f45f4487036a7da71feac1bR48