[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>

lib/app-scened-template/generic_scene.hpp

@@ -1,4 +1,5 @@
-template <typename TApp> class GenericScene {
+template <typename TApp>
+class GenericScene {
 public:
     virtual void on_enter(TApp* app, bool need_restore) = 0;
     virtual bool on_event(TApp* app, typename TApp::Event* event) = 0;