[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

---------

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

firmware/targets/f7/furi_hal/furi_hal_rtc.c

@@ -165,6 +165,14 @@ void furi_hal_rtc_init() {
     FURI_LOG_I(TAG, "Init OK");
 }
 
+void furi_hal_rtc_sync_shadow() {
+    if(!LL_RTC_IsShadowRegBypassEnabled(RTC)) {
+        LL_RTC_ClearFlag_RS(RTC);
+        while(!LL_RTC_IsActiveFlag_RS(RTC)) {
+        };
+    }
+}
+
 uint32_t furi_hal_rtc_get_register(FuriHalRtcRegister reg) {
     return LL_RTC_BAK_GetRegister(RTC, reg);
 }
@@ -312,12 +320,7 @@ void furi_hal_rtc_set_datetime(FuriHalRtcDateTime* datetime) {
     /* Exit Initialization mode */
     LL_RTC_DisableInitMode(RTC);
 
-    /* If RTC_CR_BYPSHAD bit = 0, wait for synchro else this check is not needed */
-    if(!LL_RTC_IsShadowRegBypassEnabled(RTC)) {
-        LL_RTC_ClearFlag_RS(RTC);
-        while(!LL_RTC_IsActiveFlag_RS(RTC)) {
-        };
-    }
+    furi_hal_rtc_sync_shadow();
 
     /* Enable write protection */
     LL_RTC_EnableWriteProtection(RTC);