Weren't those always canon? Specifically in the case of the Clone Wars?with the Disney acquisition, Star Wars Rebels, The Clone Wars (movie), The Clone Wars (TV), and Star Wars Resistance are officially canon and "in" the universe.
It's also worth mentioning the 2003 2D miniseries Star Wars: Clone Wars. That was originally canon however Disney dismissed it from canon after the acquisition. Shame it's not official as it had some cool stuff, especially that sweet introduction of General Grevious.