[FL-2627] Flipper applications: SDK, build and debug system (#1387)

* Added support for running applications from SD card (FAPs - Flipper Application Packages)
* Added plugin_dist target for fbt to build FAPs
* All apps of type FlipperAppType.EXTERNAL and FlipperAppType.PLUGIN are built as FAPs by default
* Updated VSCode configuration for new fbt features - re-deploy stock configuration to use them
* Added debugging support for FAPs with fbt debug & VSCode
* Added public firmware API with automated versioning

Co-authored-by: hedger <hedger@users.noreply.github.com>
Co-authored-by: SG <who.just.the.doctor@gmail.com>
Co-authored-by: あく <alleteam@gmail.com>

applications/main/lfrfid/scenes/lfrfid_scene_select_key.c

@@ -0,0 +1,22 @@
+#include "../lfrfid_i.h"
+
+void lfrfid_scene_select_key_on_enter(void* context) {
+    LfRfid* app = context;
+
+    if(lfrfid_load_key_from_file_select(app)) {
+        scene_manager_next_scene(app->scene_manager, LfRfidSceneSavedKeyMenu);
+    } else {
+        scene_manager_previous_scene(app->scene_manager);
+    }
+}
+
+bool lfrfid_scene_select_key_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(context);
+    UNUSED(event);
+    bool consumed = false;
+    return consumed;
+}
+
+void lfrfid_scene_select_key_on_exit(void* context) {
+    UNUSED(context);
+}