[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/bt/bt_service/bt_api.c

@@ -0,0 +1,41 @@
+#include "bt_i.h"
+
+bool bt_set_profile(Bt* bt, BtProfile profile) {
+    furi_assert(bt);
+
+    // Send message
+    bool result = false;
+    BtMessage message = {
+        .type = BtMessageTypeSetProfile, .data.profile = profile, .result = &result};
+    furi_check(
+        furi_message_queue_put(bt->message_queue, &message, FuriWaitForever) == FuriStatusOk);
+    // Wait for unlock
+    furi_event_flag_wait(bt->api_event, BT_API_UNLOCK_EVENT, FuriFlagWaitAny, FuriWaitForever);
+
+    return result;
+}
+
+void bt_disconnect(Bt* bt) {
+    furi_assert(bt);
+
+    // Send message
+    BtMessage message = {.type = BtMessageTypeDisconnect};
+    furi_check(
+        furi_message_queue_put(bt->message_queue, &message, FuriWaitForever) == FuriStatusOk);
+    // Wait for unlock
+    furi_event_flag_wait(bt->api_event, BT_API_UNLOCK_EVENT, FuriFlagWaitAny, FuriWaitForever);
+}
+
+void bt_set_status_changed_callback(Bt* bt, BtStatusChangedCallback callback, void* context) {
+    furi_assert(bt);
+
+    bt->status_changed_cb = callback;
+    bt->status_changed_ctx = context;
+}
+
+void bt_forget_bonded_devices(Bt* bt) {
+    furi_assert(bt);
+    BtMessage message = {.type = BtMessageTypeForgetBondedDevices};
+    furi_check(
+        furi_message_queue_put(bt->message_queue, &message, FuriWaitForever) == FuriStatusOk);
+}