FL-339: cli diagnostic interface for power subsystem. (#256)

* Core, API: add externs for c++
* Makefile: improve debug speed, flash with openocd, cleanup f2 config
* Power: add cli diagnostic.
* Local: fix api hal externs
* Local: fix externs in main and flipper_hal
* F2: power state dump stabs
* Bootloader flashing with openocd
* F3: move bq drivers to libs
* temporary do not build drivers on local
* temporary do not build drivers on f2

Co-authored-by: aanper <mail@s3f.ru>

core/app.cpp

@@ -1,8 +1,8 @@
 #include <stdio.h>
-
-extern "C" {
 #include "flipper.h"
 #include "flipper_v2.h"
+
+extern "C" {
 #include "log.h"
 #include "applications.h"
 #include "tty_uart.h"