In light of the Plasma Bigscreen shell it seemed useful to
have a device type for Smart TVs. The content is partially based on
this post from Marco Martin:
https://notmart.org/blog/2020/03/behind-plasma-bigscreen/
Some of the content is just a best-guess for the UX based on
screenshots of Plasma Bigscreen. So some parts may need to be
changed to better recommendations for an optimal UX.