Discard attribute typed arrays for buffered geometries that are not modified after initial rendering (#9512)

* add setDiscardBuffer method to BufferGeometry

* added discard support to BufferAttribute

* add mechanism for discard of BufferAttribute TypedArrays

* use more elegant method for creating dummy typed array.

* fix typo

* Update BufferGeometry.js

fix brain fade

* rework to use callbacks (phase 1)

* rework part 2

* remove build file

* support setting onUploadCallback from Geometry

* remove repeated calculation from renderer

* remove now redundant getter

* remove geoemtry interface

* document discard mechanism.

* merge fixes

* restore return.this

* drop unneeded call()

* rename discard() method to disposeArray()

* save typed array info in attribute properties

* use saved attribute properties

* remove unused variable

Spelling correction.

* Created constants / renderer

* renamed Renderer.html to WebGLRenderer.html

* Add CCDIKHelper

* Clean up MMDPhysics.js

* Fix typo

* Improved documentation for docs / Texture

* Removed duplicate needsUpate

* Optimize CCDIKSolver

* Remove lines I should have not commit

* Remove lines I should have not committed

* Improved documentation for Materials / Material

* Moved Texture Combine Operations to constanst / materials

* updated Basic, Lambert and Phong .combine property to point to Material constant page

* Improved documentation for constants / textures

* Added Encoding constants to Textures constants page

* MMDPhysics improvement

* Add property defined check

* Add setOverrideMimeType() to XHRLoader

* Rename setOverrideMimeType with setMimeType of FileLoader

* updated webglrenderer docs to reference GLState constants

* Improved doc / Contants / GLState

* webgl_materials_normalmap: clean up

* webgl_materials_normalmap: more clean up

* webgl_materials_normalmap: removed copy shader pass

- added link to example webgl_materials_blending_custom

 - added minimal usage instuctions

 - added missing source and destination factors

Docs used undeclared variable `data` instead of `extrudeSettings`.