TS: Added missing declaration file for TubePainter.

examples/jsm/misc/TubePainter.d.ts

+import {
+	Matrix4,
+	Mesh,
+	Vector3
+} from '../../../src/Three';
+
+export class TubePainter {
+
+	constructor();
+
+	mesh: Mesh;
+
+	stroke( position1: Vector3, position2: Vector3, matrix1: Matrix4, matrix2: Matrix4 ): void;
+	updateGeometry( start: number, end: number ): void;
+
+}