Move ColorDialog to Cura repo

Move component to the Cura repo as `Cura.SecondaryButton` and
`Cura.PrimaryButton` are used.

CURA 8687

resources/qml/ColorDialog.qml

@@ -0,0 +1,63 @@
+import QtQuick 2.10
+import QtQuick.Controls 2.2
+import QtQuick.Window 2.1
+import QtQuick.Layouts 1.1
+
+import UM 1.5 as UM
+import Cura 1.1 as Cura
+
+UM.Dialog
+{
+    id: base
+
+    minimumHeight: UM.Theme.getSize("small_popup_dialog").height
+    minimumWidth: UM.Theme.getSize("small_popup_dialog").width / 1.5
+    height: minimumHeight
+    width: minimumWidth
+
+    property alias color: colorInput.text
+
+    margin: UM.Theme.getSize("default_margin").width
+    buttonSpacing: UM.Theme.getSize("default_margin").width
+
+    UM.Label
+    {
+        id: colorLabel
+        font: UM.Theme.getFont("large")
+        text: "Color Code (HEX)"
+    }
+
+    TextField
+    {
+        id: colorInput
+        text: "#FFFFFF"
+        anchors.top: colorLabel.bottom
+        anchors.topMargin: UM.Theme.getSize("default_margin").height
+        validator: RegExpValidator { regExp: /^#([a-fA-F0-9]{6})$/ }
+    }
+
+    Rectangle
+    {
+        id: swatch
+        color: base.color
+        anchors.leftMargin: UM.Theme.getSize("default_margin").width
+        anchors {
+            left: colorInput.right
+            top: colorInput.top
+            bottom: colorInput.bottom
+        }
+        width: height
+    }
+
+    rightButtons:
+    [
+        Cura.PrimaryButton {
+            text: catalog.i18nc("@action:button", "OK")
+            onClicked: base.accept()
+        },
+        Cura.SecondaryButton {
+            text: catalog.i18nc("@action:button", "Cancel")
+            onClicked: base.close()
+        }
+    ]
+}

resources/qml/Preferences/Materials/MaterialsView.qml

@@ -217,7 +217,7 @@ Item
 
                 // popup dialog to select a new color
                 // if successful it sets the properties.color_code value to the new color
-                UM.ColorDialog
+                Cura.ColorDialog
                 {
                     id: colorDialog
                     color: properties.color_code