Add debug renderer definition

src/three/DebugTilesRenderer.d.ts

@@ -0,0 +1,24 @@
+import { TilesRenderer } from './TilesRenderer';
+
+export enum ColorMode {}
+export const NONE : ColorMode;
+export const SCREEN_ERROR : ColorMode;
+export const GEOMETRIC_ERROR : ColorMode;
+export const DISTANCE : ColorMode;
+export const DEPTH : ColorMode;
+export const RELATIVE_DEPTH : ColorMode;
+export const IS_LEAF : ColorMode;
+export const RANDOM_COLOR : ColorMode;
+
+
+export class DebugTilesRenderer extends TilesRenderer {
+
+	displayBoxBounds : Boolean;
+	displaySphereBounds : Boolean;
+	colorMode : ColorMode;
+
+	maxDepth : Number;
+	maxDistance : Number;
+	maxError : Number;
+
+}