[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/gui/modules/file_browser.h

@@ -0,0 +1,47 @@
+/**
+ * @file file_browser.h
+ * GUI: FileBrowser view module API
+ */
+
+#pragma once
+
+#include "m-string.h"
+#include <gui/view.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct FileBrowser FileBrowser;
+typedef void (*FileBrowserCallback)(void* context);
+
+typedef bool (
+    *FileBrowserLoadItemCallback)(string_t path, void* context, uint8_t** icon, string_t item_name);
+
+FileBrowser* file_browser_alloc(string_ptr result_path);
+
+void file_browser_free(FileBrowser* browser);
+
+View* file_browser_get_view(FileBrowser* browser);
+
+void file_browser_configure(
+    FileBrowser* browser,
+    const char* extension,
+    bool skip_assets,
+    const Icon* file_icon,
+    bool hide_ext);
+
+void file_browser_start(FileBrowser* browser, string_t path);
+
+void file_browser_stop(FileBrowser* browser);
+
+void file_browser_set_callback(FileBrowser* browser, FileBrowserCallback callback, void* context);
+
+void file_browser_set_item_callback(
+    FileBrowser* browser,
+    FileBrowserLoadItemCallback callback,
+    void* context);
+
+#ifdef __cplusplus
+}
+#endif