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>

firmware/targets/local/api-hal/api-hal-gpio.h

@@ -2,6 +2,10 @@
 #include "main.h"
 #include "stdbool.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // hw-api
 
 typedef char GPIO_TypeDef;
@@ -53,3 +57,7 @@ void hal_gpio_write(const GpioPin* gpio, const bool state);
 bool hal_gpio_read(const GpioPin* gpio);
 
 void enable_cc1101_irq();
+
+#ifdef __cplusplus
+}
+#endif

firmware/targets/local/api-hal/api-hal-task.h

@@ -3,6 +3,10 @@
 #include <cmsis_os.h>
 #include <stdbool.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // Task stack size in bytes
 #define DEFAULT_STACK_SIZE 4096
 
@@ -12,3 +16,7 @@
 bool task_equal(TaskHandle_t a, TaskHandle_t b);
 bool task_is_isr_context(void);
 __attribute__((unused)) void taskDISABLE_INTERRUPTS(void);
+
+#ifdef __cplusplus
+}
+#endif