Added kcm ui with global and app-specific config options.
Global options affect all notifications:
- Persistent only? --> Sync only notifications with timeout == 0?
- Include body? --> Add body string to summary when syncing?
- Minimum urgency
Per-application options affect notifications sent by a specific
application:
- Sync it at all?
- If yes, allow to define a "blacklist" pattern (QRegularExpression)
to define which notifications should *not* be synced.
Applications are maintained in the per-device config and added when
seen the first time by the notification listener. From that moment on
they can be configured in the kcm ui.
Eavesdrop on the Notify call of the org.freedesktop.Notifications
dbus-interface, proxy all caught notifications to our peer device and
track them in the internal notifications-list.
Also fix "cancel" requests from peer devices, by cutting of
kdeconnect-android's id-prefix.
