Add interface for space splitting and impls

src/cs/MonoGame.Extended.Collisions/ISpaceAlgorithm.cs

@@ -0,0 +1,19 @@
+using System.Collections.Generic;
+
+namespace MonoGame.Extended.Collisions;
+
+public interface ISpaceAlgorithm
+{
+    void Insert(ICollisionActor actor);
+
+    bool Remove(ICollisionActor actor);
+
+    IEnumerable<ICollisionActor> Query(RectangleF boundsBoundingRectangle);
+
+    List<ICollisionActor>.Enumerator GetEnumerator();
+
+    /// <summary>
+    /// Restructure a space with new positions
+    /// </summary>
+    void Reset();
+}