TS: Add WebGLBindingStates.d.ts.

src/renderers/webgl/WebGLBindingStates.d.ts

+import { WebGLExtensions } from './WebGLExtensions';
+import { WebGLAttributes } from './WebGLAttributes';
+import { WebGLProgram } from './WebGLProgram';
+import { WebGLCapabilities } from './WebGLCapabilities';
+import { Object3D } from './../../core/Object3D';
+import { BufferGeometry } from './../../core/BufferGeometry';
+import { BufferAttribute } from './../../core/BufferAttribute';
+import { Material } from './../../materials/Material';
+
+export class WebGLBindingStates {
+
+	constructor( gl: WebGLRenderingContext, extensions: WebGLExtensions, attributes: WebGLAttributes, capabilities: WebGLCapabilities );
+
+	setup( object: Object3D, material: Material, program: WebGLProgram, geometry: BufferGeometry, index: BufferAttribute ): void;
+	reset(): void;
+	resetDefaultState(): void;
+	dispose(): void;
+	releaseStatesOfGeometry(): void;
+	releaseStatesOfProgram(): void;
+	initAttributes(): void;
+	enableAttribute( attribute: number ): void;
+	disableUnusedAttributes(): void;
+
+}