Refactor HDMap configuration - add shaders, perspectives

src/main/java/org/dynmap/hdmap/HDShaderState.java

@@ -8,6 +8,14 @@ import org.dynmap.utils.Vector3D;
  * All method should be considered performance critical
  */
 public interface HDShaderState {
+    /**
+     * Get our shader
+     */
+    HDShader getShader();
+    /**
+     * Get our map
+     */
+    HDMap getMap();
     /**
      * Reset renderer state for new ray - passes in pixel coordinate for ray
      */