Geometries: Clean up

fix an MTK device bug

In some Chinese MTK device, gl.getProgramParameter( program, gl.ACTIVE_UNIFORMS ) will return null but not 0, which will thow an Error. 
this Commit can fix it.

fix sample direction cubemap

Optional makeEmpty in THREE.Box3

Geometry: Enhanced .copy()

fix vrml test scene house.wrl

doc: TextGeometry update for bevelSegments parameter

Update Creating-text.html

Add support for glTF binary extension (.glb)

Patch over circular dep between Box3 and Sphere

Link to more relevant page for examples of JSON fonts.

Fixed link in docs to polyfills page and src

Added note on intrinsic and extrinsic Euler types

Fixing #10341 by directly using the camera space coordinate for

Fixed cloning BufferAttribute

Optimize SkyShader.js with pre-calculated consts

Keep mesh names when importing glTF

Docs: Fixed BufferGeometry source links

Load vertex color buffers from glTF models

Fix default value for divisions

bump_scale should return a float

Implement issue #10506