SharePlugin refactoring
Summary:
Some refactoring in the Shareplugin:
Extracted some parts into separate methods
Extracted notification into separate class
Some optical tweaks on notifications
Reviewers: KDE Connect, albertvaka
Reviewed By: KDE Connect, albertvaka
Subscribers: albertvaka, KDE Connect
Tags: KDE Connect
Differential Revision: https://phabricator.kde.org/D6613