Add Khronos glTF Compressor

[abasilak]

Khronos has recently released the open source glTF-Compressor tool for interactively optimizing and fine tuning texture compression settings, to help users adjust their 3D assets for optimal web delivery. More details here: https://www.khronos.org/blog/optimize-3d-assets-with-khronos-new-gltf-compressor-tool

The JSON properties for this project are: { "name" : "Khronos glTF Compressor", "description" : "Khronos sample viewer with compression capabilities (source code)", "link" : "https://github.com/KhronosGroup/glTF-Compressor", "task" : [ "load", "view", "optimize","export" ], "type" : [ "web application" ], "inputs" : [ "glTF 2.0" ], "outputs": ["glTF 2.0"], "tags": ["Khronos Official"] }