A generic OSGB loader for VSG and more

[xarray]

I am very pleased to tell you that a lightweight OSGB format reading project is initially implemented and managed at https://gitee.com/xarray/generic-osgb.
The core part DOES NOT depend on OSG or any other thirdparty libraries, and only requires the C++ standard library. At present, integration examples with VSG has already been implemented, and I have initially tested the reading of general OSGB/OSGT models and oblique photography data (the latter requires the vsg_plugin_integration example).

This project will continue to be updated. The next step in the plan is to support Web 3D engines in loading OSGB data through WASM, as well as examples for Unity and Unreal. I look forward to your help in finding issues and submitting code, and to using it in your commercial and open-source projects.