bgfx WebGPU backend, second take!

Introduction What is bgfx? bgfx is cross-platform / API agnostic - render anywhere, effortlessly - rendering library. It occupies space just like WebGPU native, ANGLE or similar rendering libraries that provide cross-platform rendering. The key difference: bgfx is a mid-level library. Its core concept is a declarative API with draw call ordering via “views” - generalized rendering buckets where users define the purpose and order. It’s higher-level than the backends it implements, yet not so high-level as to dictate concepts like pipelines, meshes, cameras, lights, or materials.