Fix RTC synchronization after sleep, add many more tests

There were two issues with the tests

1. Incorrect print formats causing incorrect output.

2. The RTC driver was not waiting for the shadow registers to be
updated after sleeping, their reset values to be read.

firmware/Bsp/Drivers/UsartDriver.cpp

@@ -54,7 +54,6 @@ void UsartDriver::init()
 #error "Unknown device family"
 #endif
 
-
     // Set  TX (PA9) to output, push/pull
     SET_TO(GPIOA->AFR[1], GPIO_AFRH_AFSEL9, 7u << GPIO_AFRH_AFSEL9_Pos); //AF7 (USART1_TX)
     SET_TO(GPIOA->MODER, GPIO_MODER_MODE9, 2u << GPIO_MODER_MODE9_Pos); // Alternate Function