Restructure safety handle function. Now returns worst flag state set. Used to blink LED

stm-firmware/include/reflow-controller/safety/safety-config.h

@@ -27,6 +27,15 @@
 #ifndef __SAFETY_CONFIG_H__
 #define __SAFETY_CONFIG_H__
 
+/**
+ * @brief Weights of error flags.
+ */
+enum config_weight {
+    SAFETY_FLAG_CONFIG_WEIGHT_NONE = 0, /**< @brief This flag has no global error consequence, but might be respected by certain software modules. */
+    SAFETY_FLAG_CONFIG_WEIGHT_PID = 1, /**< @brief This flag will force a stop of the temperature PID controller */
+    SAFETY_FLAG_CONFIG_WEIGHT_PANIC = 2, /**< @brief This flag will trigger the panic mode */
+};
+
 /**
  * @brief Enum type representing safety flags.
  *