dragon refactor, objectives and use GenericAntag (#20201)

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

Content.Server/Objectives/Components/CarpRiftsConditionComponent.cs

@@ -0,0 +1,17 @@
+using Content.Server.Objectives.Systems;
+
+namespace Content.Server.Objectives.Components;
+
+/// <summary>
+/// Requires that the dragon open and fully charge a certain number of rifts.
+/// Depends on <see cref="NumberObjective"/> to function.
+/// </summary>
+[RegisterComponent, Access(typeof(CarpRiftsConditionSystem))]
+public sealed partial class CarpRiftsConditionComponent : Component
+{
+    /// <summary>
+    /// The number of rifts currently charged.
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public int RiftsCharged;
+}