[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/power/power_service/power_i.h

@@ -0,0 +1,48 @@
+#pragma once
+
+#include "power.h"
+
+#include <stdint.h>
+#include <gui/view_dispatcher.h>
+#include <gui/gui.h>
+
+#include <gui/modules/popup.h>
+#include "views/power_off.h"
+#include "views/power_unplug_usb.h"
+
+#include <notification/notification_messages.h>
+
+#define POWER_BATTERY_HEALTHY_LEVEL 70
+
+typedef enum {
+    PowerStateNotCharging,
+    PowerStateCharging,
+    PowerStateCharged,
+} PowerState;
+
+struct Power {
+    ViewDispatcher* view_dispatcher;
+    PowerOff* power_off;
+    PowerUnplugUsb* power_unplug_usb;
+
+    ViewPort* battery_view_port;
+    Gui* gui;
+    NotificationApp* notification;
+    FuriPubSub* event_pubsub;
+    PowerEvent event;
+
+    PowerState state;
+    PowerInfo info;
+
+    bool battery_low;
+    bool show_low_bat_level_message;
+    uint8_t battery_level;
+    uint8_t power_off_timeout;
+
+    FuriMutex* api_mtx;
+};
+
+typedef enum {
+    PowerViewOff,
+    PowerViewUnplugUsb,
+} PowerView;