Damage rework (#2525)

* Make damage work through messages and events, make destructible not inherit ruinable or reference damageable

* Copy sound logic to destructible component for now

* Fix typo

* Fix prototype error

* Remove breakable component damageable reference

* Remove breakable construction reference

* Remove ruinable component

* Move thresholds to individual components and away from damageable

* Add threshold property to damageable component code

* Add thresholds to destructible component, add states to damageable, remove damage container, fix up mob states

* Being alive isn't normal

* Fix not reading the id

* Merge fixes

* YAML fixes

* Grammar moment

* Remove unnecessary dependency

* Update thresholds doc

* Change naming of thresholds to states in MobStateComponent

* Being alive is once again normal

* Make DamageState a byte

* Bring out classes structs and enums from DestructibleComponent

* Add test for destructible thresholds

* Merge fixes

* More merge fixes and fix rejuvenate test

* Remove IMobState.IsConscious

* More merge fixes someone please god review this shit already

* Fix rejuvenate test

* Update outdated destructible in YAML

* Fix repeatedly entering the current state

* Fix repeatedly entering the current state, add Threshold.TriggersOnce and expand test

* Update saltern

Content.Server/Objectives/Conditions/StayAliveCondition.cs

@@ -1,7 +1,7 @@
 #nullable enable
 using Content.Server.Mobs;
 using Content.Server.Objectives.Interfaces;
-using Content.Shared.GameObjects.Components.Damage;
+using Content.Shared.GameObjects.Components.Mobs.State;
 using JetBrains.Annotations;
 using Robust.Shared.Localization;
 using Robust.Shared.Utility;
@@ -24,11 +24,12 @@ namespace Content.Server.Objectives.Conditions
 
         public SpriteSpecifier Icon => new SpriteSpecifier.Rsi(new ResourcePath("Objects/Misc/skub.rsi"), "icon"); //didn't know what else would have been a good icon for staying alive
 
-        public float Progress => _mind?.OwnedEntity != null &&
-                                 _mind.OwnedEntity.TryGetComponent<IDamageableComponent>(out var damageableComponent) &&
-                                 damageableComponent.CurrentState == DamageState.Dead
-                                    ? 0f
-                                    : 1f;
+        public float Progress => _mind?
+            .OwnedEntity?
+            .GetComponentOrNull<IMobStateComponent>()?
+            .IsDead() ?? false
+            ? 0f
+            : 1f;
 
         public float Difficulty => 1f;