C++ apps: templated scene controller (#517)

* C++ apps: templated scene controller
* templated app: fix type names
* templated app: text store component
* Applications: add "Templated Scene" application
* templated app: refractoring
* Gui module byte input: fix docs
* templated app: new byte input scene
* templated app: dialog ex view module
* templated app: popup view module
* templated app: dialog-ex view module, fix docs
* templated app: text input view module
* Gui module text input: fix docs
* Furi: duplicated include
* templated app: record holder (controller) class
* templated app: view modules can now be accessed via cast
* templated app: remove unused includes
* templated app: fix return code

applications/scened-app-example/scened-app.cpp

@@ -0,0 +1,20 @@
+#include "scened-app.h"
+#include "scene/scened-app-scene-start.h"
+#include "scene/scened-app-scene-byte-input.h"
+
+ScenedApp::ScenedApp()
+    : scene_controller{this}
+    , text_store{128}
+    , notification{"notification"} {
+}
+
+ScenedApp::~ScenedApp() {
+}
+
+void ScenedApp::run() {
+    scene_controller.add_scene(SceneType::Start, new ScenedAppSceneStart());
+    scene_controller.add_scene(SceneType::ByteInputScene, new ScenedAppSceneByteInput());
+
+    notification_message(notification, &sequence_blink_green_10);
+    scene_controller.process(100);
+}