Issue #15: Introduce safety weigths

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

@@ -103,6 +103,18 @@ enum config_override_entry_type {
 	SAFETY_MEMORY_CONFIG_OVERRIDE_PERSISTANCE = 2,
 };
 
+/**
+ * @brief Weights of error flags.
+ */
+enum config_override_weight {
+	SAFETY_MEMORY_CONFIG_WEIGHT_NONE = 0, /**< @brief This flag has no global error consequence, but might be respected by certain software modules. */
+	SAFETY_MEMORY_CONFIG_WEIGHT_PID = 1, /**< @brief This flag will force a stop of the temperature PID controller */
+	SAFETY_MEMORY_CONFIG_WEIGHT_PANIC = 2, /**< @brief This flag will trigger the panic mode */
+};
+
+/**
+ * @brief representation of a config override memory entry
+ */
 struct config_override {
 	enum config_override_entry_type type;
 	union {