[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/icon.h

@@ -0,0 +1,42 @@
+/**
+ * @file icon.h
+ * GUI: Icon API
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct Icon Icon;
+
+/** Get icon width 
+ *
+ * @param[in]  instance  pointer to Icon data
+ *
+ * @return     width in pixels
+ */
+uint8_t icon_get_width(const Icon* instance);
+
+/** Get icon height
+ *
+ * @param[in]  instance  pointer to Icon data
+ *
+ * @return     height in pixels
+ */
+uint8_t icon_get_height(const Icon* instance);
+
+/** Get Icon XBM bitmap data
+ *
+ * @param[in]  instance  pointer to Icon data
+ *
+ * @return     pointer to XBM bitmap data
+ */
+const uint8_t* icon_get_data(const Icon* instance);
+
+#ifdef __cplusplus
+}
+#endif