Add comments for space algo interface.

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

@@ -2,18 +2,39 @@ using System.Collections.Generic;
 
 namespace MonoGame.Extended.Collisions;
 
+/// <summary>
+/// Interface, which split space for optimization of collisions.
+/// </summary>
 public interface ISpaceAlgorithm
 {
+    /// <summary>
+    /// Inserts the actor into the space.
+    /// The actor will have its OnCollision called when collisions occur.
+    /// </summary>
+    /// <param name="actor">Actor to insert.</param>
     void Insert(ICollisionActor actor);
 
+    /// <summary>
+    /// Removes the actor into the space.
+    /// </summary>
+    /// <param name="actor">Actor to remove.</param>
     bool Remove(ICollisionActor actor);
 
+    /// <summary>
+    /// Removes the actor into the space.
+    /// The actor will have its OnCollision called when collisions occur.
+    /// </summary>
+    /// <param name="actor">Actor to remove.</param>
     IEnumerable<ICollisionActor> Query(RectangleF boundsBoundingRectangle);
 
+    /// <summary>
+    /// for foreach
+    /// </summary>
+    /// <returns></returns>
     List<ICollisionActor>.Enumerator GetEnumerator();
 
     /// <summary>
-    /// Restructure a space with new positions
+    /// Restructure the space with new positions.
     /// </summary>
     void Reset();
 }