The KDE Connect QML app has reached the point where it has almost 100% feature parity with the KCM (two features missing only: exporting/importing commands lists for the runcommand plugin, and configuring the applications for the receive notifications plugin). So I think it's time we kill the KCM module and replace it with the nicer looking QML app, removing in the process a whole lot of code duplication.
I originally wrote the KCM module 12 years ago now and it has served us well all this years, but it's time for it to go 😄
This is far less code and allows for an easier enforcing of standards, for
example the name of the log identifiers which were adjusted in a few cases.
Also clean up unused includes when noticed.
In theory we support Qt 5.6 (because of SailfishOS) but in practice we are not checking that in the CI so probably we broke the compatibility long ago. Also, I don't think anyone is using this code in SailfishOS, so we can greatly simplify the code by requiring Qt 5.15 or later.
Uses KPluginLoader+KPluginMetadata instead.
Describes plugins in json instead of desktop files. These desktop files are
then embedded into the .so file. All the plugins will be in a kdeconnect/
directory, and those will be the ones to look for.
Note it doesn't drop the KService dependency as KIOCore is a KDE Connect
dependency as well.
REVIEW: 123042
