Add initial prototype.

3-mid/physics/interface/source/physics-space.adb

@@ -0,0 +1,15 @@
+with
+     ada.unchecked_Deallocation;
+
+package body physics.Space
+is
+
+   procedure free (Self : in out View)
+   is
+      procedure deallocate is new ada.unchecked_Deallocation (Item'Class, View);
+   begin
+      Self.destruct;
+      deallocate (Self);
+   end free;
+
+end physics.Space;