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/EmojiRow.qml

@@ -0,0 +1,25 @@
+// SPDX-FileCopyrightText: 2022 Tobias Fella <tobias.fella@kde.org>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+import QtQuick
+import QtQuick.Layouts
+
+import org.kde.kirigami as Kirigami
+
+import org.kde.neochat
+
+RowLayout {
+    id: root
+
+    property alias model: repeater.model
+
+    spacing: Kirigami.Units.largeSpacing
+
+    Repeater {
+        id: repeater
+        delegate: EmojiItem {
+            emoji: modelData.emoji
+            description: modelData.description
+        }
+    }
+}