Start implementing watchdog timer

src/common/watchdog.h

@@ -0,0 +1,12 @@
+#ifndef MAD_CORE_COMMON_WATCHDOG_H
+#define MAD_CORE_COMMON_WATCHDOG_H
+
+#include <stdbool.h>
+
+void WDT_Enable(void);
+void WDT_SetTimeout(unsigned char time);
+bool WDT_HasTriggered(void);
+void WDT_Disable(void);
+void WDT_Reset(void);
+
+#endif // MAD_CORE_COMMON_WATCHDOG_H