[FL-1818] System setting and debug options. RTC HAL refactoring. (#902)

* FuriHal: RTC API refactoring. System Setting application. FuriCore: adjustable log levels. Minor code cleanup.
* Storage: change logging levels for internal storage.
* FuriCore: fix broken trace logging level

firmware/targets/f7/furi-hal/furi-hal-interrupt.c

@@ -158,7 +158,6 @@ void DMA2_Channel8_IRQHandler(void) {
     if (furi_hal_dma_channel_isr[1][7]) furi_hal_dma_channel_isr[1][7]();
 }
 
-
 void TAMP_STAMP_LSECSS_IRQHandler(void) {
     if (LL_RCC_IsActiveFlag_LSECSS()) {
         LL_RCC_ClearFlag_LSECSS();
@@ -174,7 +173,6 @@ void TAMP_STAMP_LSECSS_IRQHandler(void) {
 void RCC_IRQHandler(void) {
 }
 
-
 void NMI_Handler(void) {
     if (LL_RCC_IsActiveFlag_HSECSS()) {
         LL_RCC_ClearFlag_HSECSS();
@@ -206,5 +204,4 @@ void UsageFault_Handler(void) {
 }
 
 void DebugMon_Handler(void) {
-
 }