Assigning tags to projects

The more the number of projects/customers increases, the more this function becomes necessary: I would like to be able to assign one or more tags to each project (e.g.: customer X, CMS WP, ...) and have, among the filters, the search by tag .

In this way, during a phone call with a customer or in case of need for massive updates, I can quickly retrieve the various projects with a given tag.