[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/canvas_i.h

@@ -0,0 +1,90 @@
+/**
+ * @file canvas_i.h
+ * GUI: internal Canvas API
+ */
+
+#pragma once
+
+#include "canvas.h"
+#include <u8g2.h>
+
+/** Canvas structure
+ */
+struct Canvas {
+    u8g2_t fb;
+    CanvasOrientation orientation;
+    uint8_t offset_x;
+    uint8_t offset_y;
+    uint8_t width;
+    uint8_t height;
+};
+
+/** Allocate memory and initialize canvas
+ *
+ * @return     Canvas instance
+ */
+Canvas* canvas_init();
+
+/** Free canvas memory
+ *
+ * @param      canvas  Canvas instance
+ */
+void canvas_free(Canvas* canvas);
+
+/** Reset canvas drawing tools configuration
+ *
+ * @param      canvas  Canvas instance
+ */
+void canvas_reset(Canvas* canvas);
+
+/** Commit canvas. Send buffer to display
+ *
+ * @param      canvas  Canvas instance
+ */
+void canvas_commit(Canvas* canvas);
+
+/** Get canvas buffer.
+ *
+ * @param      canvas  Canvas instance
+ *
+ * @return     pointer to buffer
+ */
+uint8_t* canvas_get_buffer(Canvas* canvas);
+
+/** Get canvas buffer size.
+ *
+ * @param      canvas  Canvas instance
+ *
+ * @return     size of canvas in bytes
+ */
+size_t canvas_get_buffer_size(Canvas* canvas);
+
+/** Set drawing region relative to real screen buffer
+ *
+ * @param      canvas    Canvas instance
+ * @param      offset_x  x coordinate offset
+ * @param      offset_y  y coordinate offset
+ * @param      width     width
+ * @param      height    height
+ */
+void canvas_frame_set(
+    Canvas* canvas,
+    uint8_t offset_x,
+    uint8_t offset_y,
+    uint8_t width,
+    uint8_t height);
+
+/** Set canvas orientation
+ *
+ * @param      canvas       Canvas instance
+ * @param      orientation  CanvasOrientation
+ */
+void canvas_set_orientation(Canvas* canvas, CanvasOrientation orientation);
+
+/** Get canvas orientation
+ *
+ * @param      canvas  Canvas instance
+ *
+ * @return     CanvasOrientation
+ */
+CanvasOrientation canvas_get_orientation(const Canvas* canvas);