Loaders: Replace inflate with fflate.

[Mugen87]

Related issue: see #20941 (comment)

Description

This PR replaces the usage of inflate.js with fflate.js in FBXLoader, VTKLoader and EXRLoader.

/cc @sciecode, @looeee

[101arrowz]

Mainly to assure users that Three.js is fully FOSS, it might be useful to add doc comments to the minified files for fflate:

fflate.js:

/*!
fflate - fast JavaScript compression/decompression
<https://101arrowz.github.io/fflate>
Licensed under MIT. https://github.com/101arrowz/fflate/blob/master/LICENSE
Subset included: synchronous unzip, gunzip, and unzlib
*/

fflate-deflate.js (if this is added down the line):

/*!
fflate - fast JavaScript compression/decompression
<https://101arrowz.github.io/fflate>
Licensed under MIT. https://github.com/101arrowz/fflate/blob/master/LICENSE
Subset included: synchronous deflate
*/

[sciecode]

Tested all internal EXRLoader usages of fflate.js, everything looks in order.

[Mugen87]

Mainly to assure users that Three.js is fully FOSS, it might be useful to add doc comments to the minified files for fflate:

Done for fflate.min.js and fflate.module.min.js. fflate-deflate is not yet part of the repo.

[mrdoob]

Thanks!