[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/bad_usb/bad_usb_script.h

@@ -0,0 +1,45 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <furi.h>
+#include <m-string.h>
+
+typedef struct BadUsbScript BadUsbScript;
+
+typedef enum {
+    BadUsbStateInit,
+    BadUsbStateNotConnected,
+    BadUsbStateIdle,
+    BadUsbStateRunning,
+    BadUsbStateDelay,
+    BadUsbStateDone,
+    BadUsbStateScriptError,
+    BadUsbStateFileError,
+} BadUsbWorkerState;
+
+typedef struct {
+    BadUsbWorkerState state;
+    uint16_t line_cur;
+    uint16_t line_nb;
+    uint32_t delay_remain;
+    uint16_t error_line;
+} BadUsbState;
+
+BadUsbScript* bad_usb_script_open(string_t file_path);
+
+void bad_usb_script_close(BadUsbScript* bad_usb);
+
+void bad_usb_script_start(BadUsbScript* bad_usb);
+
+void bad_usb_script_stop(BadUsbScript* bad_usb);
+
+void bad_usb_script_toggle(BadUsbScript* bad_usb);
+
+BadUsbState* bad_usb_script_get_state(BadUsbScript* bad_usb);
+
+#ifdef __cplusplus
+}
+#endif