[FL-3226] Deep Sleep Idle (#2569)

* Improve RNG error handling
* Sync RTC shadow registers on Stop mode exit
* Implement working STOP2 mode
* Fix formatting
* FuriHal: disable SWD pins if debug is disabled
* Power: cleanup battery info view, handle zero current report from gauge
* Fbt: add command line argument for extra global defines
* FuriHal: cleanup debug defines in power and os, drop deep_insomnia counter.
* Add a setting to disable deep sleep
* Clean up furi_hal_power
* FuriHal,FapLoader,Debug: implement debug in stop mode, workaround resume in stop
* FuriHal: document OS and power subsystems debugging
* Furi: enable debug interface on crash

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

firmware/targets/furi_hal_include/furi_hal_debug.h

@@ -18,6 +18,9 @@ void furi_hal_debug_enable();
 /** Disable MCU debug */
 void furi_hal_debug_disable();
 
+/** Check if GDB debug session is active */
+bool furi_hal_debug_is_gdb_session_active();
+
 #ifdef __cplusplus
 }
 #endif