Implement production vertical slice foundation

game/domain/dive/dive_alert_state.gd

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+class_name DiveAlertState
+extends RefCounted
+
+const DiveAlertLevel = preload("res://game/domain/dive/dive_alert_level.gd")
+
+var oxygen: DiveAlertLevel.Value
+var battery: DiveAlertLevel.Value
+var hull: DiveAlertLevel.Value
+var depth: DiveAlertLevel.Value
+var maximum: DiveAlertLevel.Value
+
+
+func _init(
+	p_oxygen: DiveAlertLevel.Value,
+	p_battery: DiveAlertLevel.Value,
+	p_hull: DiveAlertLevel.Value,
+	p_depth: DiveAlertLevel.Value
+) -> void:
+	oxygen = p_oxygen
+	battery = p_battery
+	hull = p_hull
+	depth = p_depth
+	maximum = DiveAlertLevel.highest([oxygen, battery, hull, depth])