Added CuraDirve plugin to Cura build

CURA-6005

plugins/CuraDrive/src/qml/main.qml

@@ -0,0 +1,42 @@
+// Copyright (c) 2018 Ultimaker B.V.
+import QtQuick 2.7
+import QtQuick.Controls 2.1
+import QtQuick.Window 2.2
+
+import UM 1.3 as UM
+import Cura 1.1 as Cura
+
+import "components"
+import "pages"
+
+Window
+{
+    id: curaDriveDialog
+    minimumWidth: Math.round(UM.Theme.getSize("modal_window_minimum").width)
+    minimumHeight: Math.round(UM.Theme.getSize("modal_window_minimum").height)
+    maximumWidth: minimumWidth * 1.2
+    maximumHeight: minimumHeight * 1.2
+    width: minimumWidth
+    height: minimumHeight
+    color: UM.Theme.getColor("sidebar")
+    title: catalog.i18nc("@title:window", "Cura Backups")
+
+    // Globally available.
+    UM.I18nCatalog
+    {
+        id: catalog
+        name: "cura_drive"
+    }
+
+    WelcomePage
+    {
+        id: welcomePage
+        visible: !Cura.API.account.isLoggedIn
+    }
+
+    BackupsPage
+    {
+        id: backupsPage
+        visible: Cura.API.account.isLoggedIn
+    }
+}