Move remaining code to app module

There's still some stuff that could potentially go elsewhere but I think it's enough for now.

src/app/qml/FullScreenMap.qml

@@ -0,0 +1,79 @@
+// SPDX-FileCopyrightText: 2021 Tobias Fella <fella@posteo.de>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+import QtQuick
+import QtQuick.Controls
+import QtLocation
+import QtPositioning
+
+import org.kde.kirigami as Kirigami
+
+ApplicationWindow {
+    id: root
+
+    property real latitude: NaN
+    property real longitude: NaN
+    property string asset
+    property var author
+    property QtObject liveLocationModel: null
+
+    flags: Qt.FramelessWindowHint | Qt.WA_TranslucentBackground
+    visibility: Qt.WindowFullScreen
+
+    title: i18n("View Location")
+
+    Shortcut {
+        sequence: "Escape"
+        onActivated: root.destroy()
+    }
+
+    color: Kirigami.Theme.backgroundColor
+
+    background: AbstractButton {
+        onClicked: root.destroy()
+    }
+
+    MapView {
+        id: mapView
+        anchors.fill: parent
+        map.center: root.liveLocationModel ? QtPositioning.coordinate(root.liveLocationModel.boundingBox.y, root.liveLocationModel.boundingBox.x) : QtPositioning.coordinate(root.latitude, root.longitude)
+        map.zoomLevel: 15
+        map.plugin: OsmLocationPlugin.plugin
+        LocationMapItem {
+            latitude: root.latitude
+            longitude: root.longitude
+            asset: root.asset
+            author: root.author
+            isLive: true
+            heading: NaN
+            visible: !isNaN(root.latitude) && !isNaN(root.longitude)
+            Component.onCompleted: mapView.map.addMapItem(this)
+        }
+        MapItemView {
+            model: root.liveLocationModel
+            delegate: LocationMapItem {}
+            Component.onCompleted: mapView.map.addMapItemView(this)
+        }
+
+        Connections {
+            target: mapView.map
+            function onCopyrightLinkActivated() {
+                Qt.openUrlExternally(link);
+            }
+        }
+    }
+
+    Button {
+        anchors.top: parent.top
+        anchors.right: parent.right
+
+        text: i18n("Close")
+        icon.name: "dialog-close"
+        display: AbstractButton.IconOnly
+
+        width: Kirigami.Units.gridUnit * 2
+        height: Kirigami.Units.gridUnit * 2
+
+        onClicked: root.destroy()
+    }
+}