Add support for JT file format

Add JT importer.

JT (Jupiter Tessellation) is an ISO-standardized 3D data format and is in industry used for product visualization, collaboration, CAD data exchange, and in some also for long-term data retention.

**Tasks**
- [ ] Investigate the [JT format](https://en.wikipedia.org/wiki/JT_(visualization_format)) and determine what features to support / what can convert to glTF. At a minimum, geometry and textures should be parsed and converted.
- [ ] Implement parser to convert JT to [Asset3D](https://github.com/BabylonJS/BabylonPolymorph/blob/master/Morphs/Importers/CoreUtils/Shared/Asset3D/cpp/Inc/Asset3D/Asset3D.h). See the [OBJ importer](https://github.com/BabylonJS/BabylonPolymorph/tree/master/Morphs/Importers/Transcoders/Shared/Transcoders/Source/TranscoderOBJ) as an example.