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

lib/app-scened-template/text-store.h

@@ -0,0 +1,12 @@
+#pragma once
+#include <stdint.h>
+
+class TextStore {
+public:
+    TextStore(uint8_t text_size);
+    ~TextStore();
+
+    void set_text_store(const char* text...);
+    const uint8_t text_size;
+    char* text;
+};