[Component Chooser] Add setting for "tel" URI
In addition to KDE Connect sending phone numbers to the phone, there could be other video conferencing apps handling "tel" URLs
Noticed that Zoom had stolen my tel: URLs, now I could change it back.
I was looking at making the URL handler stuff generic but there's a bunch of app-specific URL handlers (e.g. spotify:/, steam:/, etc) that makes no sense to be user-configurable, so let's just add yet another explicit URI scheme handler setting.
(The KDE Connect thing was never really meant to be user-facing, hence the clunky name)
UI also implies this would change the dialer app on PlaMo, too, but I don't know