Examples: Adjusted path handling in VRMLoader and LegacyGLTFLoader.

remove unnecessary checks

Fix more linter errors in examples

Fix linter errors in misc and WebVR examples

cleanup code

Fix directory case of Monster/glTF-Lights.

Examples: Fix stream handling in webgl_materials_video_webcam

fix(docs): Update example & link for Detector.js -> WebGL.js

Fix linter errors in canvas examples

Some new zh translation.

MTLLoader: Introduced new path handling.

Docs: Reword light.distance explanation.

Docs: Added basic language navigation.

Refactored Detector.js into WebGL.js