[calamares] Add a sample QML-sidebar

- The built-in one is loaded if no branding file is found.
- This sidebar is just the most basic of QML examples.

src/calamares/CMakeLists.txt

@@ -20,6 +20,7 @@ include_directories(
 # Translations
 include( CalamaresAddTranslations )
 add_calamares_translations( ${CALAMARES_TRANSLATION_LANGUAGES} )
+qt5_add_resources( calamaresRc calamares.qrc )
 
 add_executable( calamares_bin ${calamaresSources} ${calamaresRc} ${trans_outfile} )
 target_include_directories( calamares_bin PRIVATE ${CMAKE_SOURCE_DIR} )

src/calamares/calamares-sidebar.qml

@@ -0,0 +1,12 @@
+import QtQuick 2.3
+
+Rectangle {
+    width: 200
+    height: 100
+    color: "red"
+
+    Text {
+        anchors.centerIn: parent
+        text: "Hello, World!"
+    }
+}

src/calamares/calamares.qrc

@@ -0,0 +1,5 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+  <file alias="calamares-sidebar.qml">calamares-sidebar.qml</file>
+</qresource>
+</RCC>