Alerts for breathing plasma/tritium (#24484)

* Alert autoremove v0

* Code cleanup and timing

* comment

* Tritium, code compression

* not resolving manually

* reduced lookups, new comp

* fix-fix yes

* use RemCompDeferred, handle OnUnpaused

* missed a todo

* entitysystem resolve

* remove unnecessary component updates

* remove AlertState from comp, move EntityUnpausedEvent actions to AlertStateComponent's Timespan

* Code cleanup

* comments

* combines AutoRemove input into Clear

* minor logic adjustment that does not really change anything but is less ambiguous

Content.Shared/Alert/AlertAutoRemoveComponent.cs

@@ -0,0 +1,19 @@
+using Robust.Shared.GameStates;
+
+namespace Content.Shared.Alert;
+
+/// <summary>
+///     Copy of the entity's alerts that are flagged for autoRemove, so that not all of the alerts need to be checked constantly
+/// </summary>
+[RegisterComponent, NetworkedComponent, AutoGenerateComponentState]
+public sealed partial class AlertAutoRemoveComponent : Component
+{
+    /// <summary>
+    ///     List of alerts that have to be checked on every tick for automatic removal at a specific time
+    /// </summary>
+    [AutoNetworkedField]
+    [DataField]
+    public List<AlertKey> AlertKeys = new();
+
+    public override bool SendOnlyToOwner => true;
+}