[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/services/desktop/views/desktop_view_debug.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include <stdint.h>
+#include <gui/view.h>
+#include "desktop_events.h"
+
+typedef struct DesktopDebugView DesktopDebugView;
+
+typedef void (*DesktopDebugViewCallback)(DesktopEvent event, void* context);
+
+// Debug info
+typedef enum {
+    DesktopViewStatsFw,
+    DesktopViewStatsMeta,
+    DesktopViewStatsTotalCount,
+} DesktopViewStatsScreens;
+
+struct DesktopDebugView {
+    View* view;
+    DesktopDebugViewCallback callback;
+    void* context;
+};
+
+typedef struct {
+    uint32_t icounter;
+    uint32_t butthurt;
+    uint64_t timestamp;
+    DesktopViewStatsScreens screen;
+} DesktopDebugViewModel;
+
+void desktop_debug_set_callback(
+    DesktopDebugView* debug_view,
+    DesktopDebugViewCallback callback,
+    void* context);
+
+View* desktop_debug_get_view(DesktopDebugView* debug_view);
+
+DesktopDebugView* desktop_debug_alloc();
+void desktop_debug_free(DesktopDebugView* debug_view);
+
+void desktop_debug_get_dolphin_data(DesktopDebugView* debug_view);
+void desktop_debug_reset_screen_idx(DesktopDebugView* debug_view);