[Suggestion] Would be great to add some tags for easier discovery

[MiracleBlue]

Howdy!

Shadow-dom enthusiast here.

Would love for this repository to be a bit easier to discover by others, so I thought I'd suggest adding some tags/topics. I found this thanks to someone I follow having found it and starred it, but I regularly search for interesting shadow-dom related stuff using topics.

Keep up the good work :)