Implement sharing with Purpose (export)

This provide both a mobile and desktop view

Fix #181

imports/NeoChat/Menu/ShareActionAndroid.qml

@@ -0,0 +1,10 @@
+// SPDX-FileCopyrightText: 2021 Carl Schwan <carl@carlschwan.eu>
+// SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
+
+import org.kde.kirigami 2.14 as Kirigami
+
+Kirigami.Action {
+    property var inputData: ({})
+    property var doBeforeSharing: () => {}
+    visible: false
+}