Dynamic space world generation and debris. (#15120)

* World generation (squash)

* Test fixes.

* command

* o

* Access cleanup.

* Documentation touchups.

* Use a prototype serializer for BiomeSelectionComponent

* Struct enumerator in SimpleFloorPlanPopulatorSystem

* Safety margins around PoissonDiskSampler, cookie acquisition methodologies

* Struct enumerating PoissonDiskSampler; internal side

* Struct enumerating PoissonDiskSampler: Finish it

* Update WorldgenConfigSystem.cs

awa

---------

Co-authored-by: moonheart08 <moonheart08@users.noreply.github.com>
Co-authored-by: 20kdc <asdd2808@gmail.com>

Content.Server/Worldgen/Components/WorldChunkComponent.cs

@@ -0,0 +1,22 @@
+using Content.Server.Worldgen.Systems;
+
+namespace Content.Server.Worldgen.Components;
+
+/// <summary>
+///     This is used for marking an entity as being a world chunk.
+/// </summary>
+[RegisterComponent]
+[Access(typeof(WorldControllerSystem))]
+public sealed class WorldChunkComponent : Component
+{
+    /// <summary>
+    ///     The coordinates of the chunk, in chunk space.
+    /// </summary>
+    [DataField("coordinates")] public Vector2i Coordinates;
+
+    /// <summary>
+    ///     The map this chunk belongs to.
+    /// </summary>
+    [DataField("map")] public EntityUid Map;
+}
+