[FL-1905] Fix power off notification (#748)

* view dispatcher: add set view front API
* power: add power off notification
* Gui: rename ViewPort `send_to` API.
* Makefile: add blackmagick support

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>

make/rules.mk

@@ -95,6 +95,20 @@ debug_other:
 		-ex "source ../debug/PyCortexMDebug/PyCortexMDebug.py" \
 		-ex "svd_load $(SVD_FILE)" \
 
+
+blackmagic: flash
+	arm-none-eabi-gdb-py \
+		-ex 'target extended-remote $(BLACKMAGIC)' \
+		-ex 'monitor swdp_scan' \
+		-ex 'monitor debug_bmp enable' \
+		-ex 'attach 1' \
+		-ex "set confirm off" \
+		-ex "source ../debug/FreeRTOS/FreeRTOS.py" \
+		-ex "source ../debug/PyCortexMDebug/PyCortexMDebug.py" \
+		-ex "svd_load $(SVD_FILE)" \
+		-ex "compare-sections" \
+		$(OBJ_DIR)/$(PROJECT).elf; \
+
 openocd:
 	openocd $(OPENOCD_OPTS)