KDE: Add sddm theme

kde/sddm/Sweet-Mars/components/Input.qml

@@ -0,0 +1,19 @@
+import QtQuick 2.2
+import QtQuick.Layouts 1.2
+import QtQuick.Controls 2.4
+import QtQuick.Controls.Styles 1.4
+
+TextField {
+    placeholderTextColor: config.color
+    palette.text: config.color
+    font.pointSize: config.fontSize
+    font.family: config.font
+    background: Rectangle {
+        color: "#1c2124"
+        opacity: 0.7
+        radius: parent.width / 2
+        height: 30
+        width: 270
+        anchors.centerIn: parent
+    }
+}