Naming and coding style convention, new linter tool. (#945)

* Makefile, Scripts: new linter
* About: remove ID from IC
* Firmware: remove double define for DIVC/DIVR
* Scripts: check folder names too. Docker: replace syntax check with make lint.
* Reformat Sources and Migrate to new file naming convention
* Docker: symlink clang-format-12 to clang-format
* Add coding style guide

applications/ibutton/scene/ibutton_scene_start.cpp

@@ -0,0 +1,63 @@
+#include "ibutton_scene_start.h"
+#include "../ibutton_app.h"
+#include "../ibutton_view_manager.h"
+#include "../ibutton_event.h"
+#include <callback-connector.h>
+
+typedef enum {
+    SubmenuIndexRead,
+    SubmenuIndexSaved,
+    SubmenuIndexAdd,
+} SubmenuIndex;
+
+void iButtonSceneStart::on_enter(iButtonApp* app) {
+    iButtonAppViewManager* view_manager = app->get_view_manager();
+    Submenu* submenu = view_manager->get_submenu();
+    auto callback = cbc::obtain_connector(this, &iButtonSceneStart::submenu_callback);
+
+    submenu_add_item(submenu, "Read", SubmenuIndexRead, callback, app);
+    submenu_add_item(submenu, "Saved", SubmenuIndexSaved, callback, app);
+    submenu_add_item(submenu, "Add manually", SubmenuIndexAdd, callback, app);
+    submenu_set_selected_item(submenu, submenu_item_selected);
+
+    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewSubmenu);
+}
+
+bool iButtonSceneStart::on_event(iButtonApp* app, iButtonEvent* event) {
+    bool consumed = false;
+
+    if(event->type == iButtonEvent::Type::EventTypeMenuSelected) {
+        submenu_item_selected = event->payload.menu_index;
+        switch(event->payload.menu_index) {
+        case SubmenuIndexRead:
+            app->switch_to_next_scene(iButtonApp::Scene::SceneRead);
+            break;
+        case SubmenuIndexSaved:
+            app->switch_to_next_scene(iButtonApp::Scene::SceneSelectKey);
+            break;
+        case SubmenuIndexAdd:
+            app->switch_to_next_scene(iButtonApp::Scene::SceneAddType);
+            break;
+        }
+        consumed = true;
+    }
+
+    return consumed;
+}
+
+void iButtonSceneStart::on_exit(iButtonApp* app) {
+    iButtonAppViewManager* view = app->get_view_manager();
+    Submenu* submenu = view->get_submenu();
+
+    submenu_clean(submenu);
+}
+
+void iButtonSceneStart::submenu_callback(void* context, uint32_t index) {
+    iButtonApp* app = static_cast<iButtonApp*>(context);
+    iButtonEvent event;
+
+    event.type = iButtonEvent::Type::EventTypeMenuSelected;
+    event.payload.menu_index = index;
+
+    app->get_view_manager()->send_event(&event);
+}