Objectives ecs rework (#19967)

Co-authored-by: deltanedas <@deltanedas:kde.org>

Content.Server/Objectives/Components/KillPersonConditionComponent.cs

@@ -0,0 +1,17 @@
+using Content.Server.Objectives.Systems;
+
+namespace Content.Server.Objectives.Components;
+
+/// <summary>
+/// Requires that a target dies or, if <see cref="RequireDead"/> is false, is not on the emergency shuttle.
+/// Depends on <see cref="TargetObjectiveComponent"/> to function.
+/// </summary>
+[RegisterComponent, Access(typeof(KillPersonConditionSystem))]
+public sealed partial class KillPersonConditionComponent : Component
+{
+    /// <summary>
+    /// Whether the target must be truly dead, ignores missing evac.
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public bool RequireDead = false;
+}