LibWeb/WebGL: Implement deleteBuffer

Author: https://github.com/Lubrsi
Commit: 2e1640a6c5
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2791
Reviewed-by: https://github.com/gmta
Reviewed-by: https://github.com/shannonbooth

Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWebGLRenderingContext.cpp

@@ -699,6 +699,14 @@ public:
             continue;
         }
 
+        if (function.name == "deleteBuffer"sv) {
+            function_impl_generator.append(R"~~~(
+    auto handle = buffer ? buffer->handle() : 0;
+    glDeleteBuffers(1, &handle);
+)~~~");
+            continue;
+        }
+
         Vector<ByteString> gl_call_arguments;
         for (size_t i = 0; i < function.parameters.size(); ++i) {
             auto const& parameter = function.parameters[i];