Clean up context menus.

qml/Components/ClideMenu.qml

@@ -0,0 +1,13 @@
+import QtQuick
+import QtQuick.Controls.Basic
+
+import clide.module 1.0
+
+Menu {
+    background: Rectangle {
+        border.color: Qt.darker(RustColors.menubar, 2)
+        color: RustColors.menubar
+        implicitWidth: 100
+        radius: 2
+    }
+}