Export WebGLRenderingContext, WebGLTexture from node-index.js and

[kartikdutt18]

Hi all,

1. It adds Export WebGLRenderingContext, WebGLTexture.
2. Updated dll since angle will have the flag FORCE_ENABLE_WARP that can be set to true in env.
3. dll from : https://github.com/stackgl/angle/pull/2/files

[cclauss]

Suggested change

	const { WebGLTexture } = require("./webgl-texture")
	const { WebGLTexture } = require('./webgl-texture')

and add one and only one blank line to the end of the file to placate standard running on AppVeyor.

• Scroll to the very bottom of https://ci.appveyor.com/project/dhritzkiv/headless-gl/builds/47591784

standard | snazzy && tape test/*.js | faucet
standard: Use JavaScript Standard Style (https://standardjs.com)
standard: Run standard --fix to automatically fix some problems.
C:\projects\headless-gl\src\javascript\node-index.js
130:34 error Strings must use singlequote quotes
132:43 error Newline required at end of file but not found eol-last
✖ 2 problems
Command exited with code 1