Now that plasma-keyboard has had its first release, we can switch to it
as the default keyboard and drop maliit-keyboard (and its Qt 5 dependency).
We also drop the maliit-keyboard kcm here (moved to
https://invent.kde.org/devinlin/maliit-keyboard-kcm), which is replaced by the one
installed by plasma-keyboard.
I prefer create MR now to avoid biggest merge request.
It add minimalist implementation:
- First configuration of Waydroid
- Stop / Start Waydroid session
- Configure properties of Waydroid
- Display current ip of Waydroid
| Not installed | First initialization | initializing | SessionNotStarted | SessionStarting | SessionStarted |
| ------ | ------ | ------ | ------ | ------ | ------ |
|  |  |  |  |  |  |
Linked to https://invent.kde.org/teams/plasma-mobile/issues/-/issues/307
**Note for Reviewer**: In my local environment, i need to add manually the KAuth files otherwise polkit not recognize the implementation.
```
sudo cp ~/kde/usr/share/dbus-1/system-services/org.kde.plasma.mobileshell.waydroidhelper.service /usr/share/dbus-1/system-services/
sudo cp ~/kde/usr/share/dbus-1/system.d/org.kde.plasma.mobileshell.waydroidhelper.conf /usr/share/dbus-1/system.d/
sudo cp ~/kde/usr/share/polkit-1/actions/org.kde.plasma.mobileshell.waydroidhelper.policy /usr/share/polkit-1/actions/
```
plasma-nm currently has the mobile network KCMs, but requires having a build flag in order to have them installed. This then requires distros to have multiple versions of the plasma-nm package. I think it makes sense to move them here so that packaging and development is easier.
Having the KCMs that are mobile specific here makes more sense than in the settings application. Historically plasma-settings had a faster release cycle than Plasma, but the application is now moving to the Plasma release schedule and so it makes sense do this now.
