Add initial prototype.

3-mid/physics/interface/source/private/bullet/bullet_physics.ads

@@ -0,0 +1,16 @@
+with
+     float_Math.Geometry.D3;
+
+package bullet_Physics
+--
+-- Provides an implementation of the physics interface using a binding to the Bullet3D C library.
+--
+is
+   pragma Pure;
+
+   package Math        renames float_Math;
+   package Geometry_3D renames math.Geometry.D3;
+
+   Error : exception;
+
+end bullet_Physics;