LibWeb: Add a webgl_version getter to OpenGLContext

Author: https://github.com/cqundefine
Commit: 395bc3ee27
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6676
Reviewed-by: https://github.com/kalenikaliaksandr ✅
Reviewed-by: https://github.com/konradekk

Libraries/LibWeb/WebGL/OpenGLContext.h

@@ -44,6 +44,8 @@ public:
     Vector<String> get_supported_extensions();
     void request_extension(char const* extension_name);
 
+    WebGLVersion webgl_version() const { return m_webgl_version; }
+
 private:
     NonnullRefPtr<Gfx::SkiaBackendContext> m_skia_backend_context;
     Gfx::IntSize m_size;