Add sleepForever() function

Firmware/src/FreeRTOS/Util.cpp

@@ -0,0 +1,3 @@
+#include "Util.h"
+void freertos::sleep(int time) { vTaskDelay(time * portTICK_PERIOD_MS); }
+void freertos::sleepForever() { vTaskDelay(portMAX_DELAY); }

Firmware/src/FreeRTOS/Util.h

@@ -4,5 +4,8 @@
 namespace freertos {
 /// @brief Blocks the task for the specified amount of time
 /// @param time in milliseconds
-void sleep(int time) { vTaskDelay(time * portTICK_PERIOD_MS); }
+void sleep(int time);
+
+/// @brief Sleep for the maximum delay possible
+void sleepForever();
 } // namespace freertos