Objectives ecs rework (#19967)

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

Content.Server/Objectives/Components/TargetObjectiveComponent.cs

@@ -0,0 +1,21 @@
+using Content.Server.Objectives.Systems;
+
+namespace Content.Server.Objectives.Components;
+
+[RegisterComponent, Access(typeof(TargetObjectiveSystem))]
+public sealed partial class TargetObjectiveComponent : Component
+{
+    /// <summary>
+    /// Locale id for the objective title.
+    /// It is passed "targetName" and "job" arguments.
+    /// </summary>
+    [DataField(required: true), ViewVariables(VVAccess.ReadWrite)]
+    public string Title = string.Empty;
+
+    /// <summary>
+    /// Mind entity id of the target.
+    /// This must be set by another system using <see cref="TargetObjectiveSystem.SetTarget"/>.
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public EntityUid? Target;
+}