Deserialized a list! Restructured project!

I finally got deserializing lists working. Exposing them to QML was not
a trivial task either. Note that I didn't do it the clean way. Nested
lists are not supported. But it works!

Because I got so frustarted at one point trying to implement things the
right way, I restructured the project to seperate the Sailfish code from
the Qt code and created a new, empty desktop project. The Qt code has
been transformed into a happy little library, to which the Sailfish OS
application links.

Note that QMake doesn't seem to strip the library for some reason.

sailfish/qml/components/PlayToolbar.qml

@@ -0,0 +1,80 @@
+/*
+Sailfin: a Jellyfin client written using Qt
+Copyright (C) 2020 Chris Josten
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+import QtQuick 2.6
+import Sailfish.Silica 1.0
+
+Column {
+    property alias imageSource : playImage.source
+    property real imageAspectRatio: 1.0
+    property real playProgress: 0.0
+    signal playPressed(bool startFromBeginning)
+    spacing: Theme.paddingLarge
+
+    BackgroundItem {
+        width: parent.width
+        height: width / imageAspectRatio
+        HighlightImage {
+            id: playImage
+            anchors.fill: parent
+            fillMode: Image.PreserveAspectCrop
+            clip: true
+        }
+        Rectangle {
+            anchors.fill: parent
+            color: Theme.rgba(Theme.overlayBackgroundColor, Theme.opacityLow)
+        }
+        Icon {
+            id: playButton
+            source: "image://theme/icon-l-play"
+            anchors.centerIn: parent
+            highlighted: parent.highlighted
+        }
+        Rectangle {
+            anchors {
+                left: parent.left
+                bottom: parent.bottom
+            }
+            height: Theme.paddingMedium
+            color: Theme.highlightColor
+            width: parent.width * playProgress
+        }
+        onClicked: playPressed(false)
+    }
+    Row {
+        anchors {
+            //left: parent.left
+            right: parent.right
+            leftMargin: Theme.horizontalPageMargin
+            rightMargin: Theme.horizontalPageMargin
+        }
+        spacing: Theme.paddingMedium
+        IconButton {
+            id: playFromBeginning
+            icon.source: "image://theme/icon-m-backup"
+            visible: playProgress > 0
+            onClicked: playPressed(true)
+        }
+        IconButton {
+            id: favouriteButton
+            icon.source: "image://theme/icon-m-favorite"
+        }
+
+    }
+}