Add new boot logo screen

src/screens/BootLogoScreen.cpp

@@ -0,0 +1,14 @@
+#include "BootLogoScreen.h"
+
+#include <EpdRenderer.h>
+
+#include "images/CrossLarge.h"
+
+void BootLogoScreen::onEnter() {
+  const auto pageWidth = renderer->getPageWidth();
+  const auto pageHeight = renderer->getPageHeight();
+
+  renderer->clearScreen();
+  // Location for images is from top right in landscape orientation
+  renderer->drawImage(CrossLarge, (pageHeight - 128) /2, (pageWidth - 128) / 2, 128, 128);
+}