testing building some core systems

- serialization
- chunks
- parralelfor test

Nerfed.Runtime/Scene/ISceneSerializer.cs

@@ -0,0 +1,13 @@
+namespace Nerfed.Runtime.Scene;
+
+/// <summary>
+/// Abstraction over a concrete scene format (JSON, binary, …).
+/// Implementations read and write <see cref="SceneData"/> to a <see cref="Stream"/>,
+/// making it straightforward to add a compact binary format later without
+/// changing any of the surrounding scene infrastructure.
+/// </summary>
+public interface ISceneSerializer
+{
+    void Serialize(SceneData scene, Stream stream);
+    SceneData Deserialize(Stream stream);
+}