feat(bindings): update C# wrappers for meshopt, nvtt, ufbx

Refactor and regenerate native C# bindings for Ghost.MeshOptimizer, Ghost.Nvtt, and Ghost.Ufbx to match updated native APIs and improve usability.
- Replace meshoptimizer.dll with newer version.
- Move meshoptimizer functions to static methods in partial class; add new meshlet, simplification, quantization features.
- Remove enum wrappers in favor of constants; delete meshopt_Allocator.cs.
- Regenerate native wrappers with PascalCase naming, XML doc comments, and aggressive inlining.
- Implement IDisposable for resource structs; update configs for naming, documentation, and method mapping.
- Update user code to use new wrapper classes and method names.
- Improve documentation and comments for clarity.

BREAKING CHANGE: API surface changes, wrapper class and method names updated, enum wrappers removed, custom allocator deleted.

src/Tools/Ghost.NativeWrapperGen/Emit/WrapperGeneratorEmitter.cs

@@ -215,7 +215,7 @@ public sealed class WrapperGeneratorEmitter
                 resolver.TryGetBindingStructName(func.Parameters[0].TypeName),
             "RETURN_TYPE" =>
                 resolver.TryGetBindingStructName(func.ReturnType),
-            _ => null,
+            _ => targetTypeRule,
         };
     }
 
@@ -283,7 +283,11 @@ public sealed class WrapperGeneratorEmitter
         var plan = BuildParameterPlan(func, config, routed);
 
         // Comment showing the source function.
-        writer.WriteLine($"// From: {func.Name}({string.Join(", ", func.Parameters.Select(static p => p.TypeName))})");
+        writer.WriteLine("/// <summary>");
+        writer.WriteLine($"/// From: <see cref=\"Api.{func.Name}({string.Join(", ", func.Parameters.Select(static p => p.TypeName))})\" />");
+        writer.WriteLine("/// </summary>");
+
+        writer.WriteLine("[System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.AggressiveInlining)]");
 
         // Signature
         var staticModifier = routed.IsInstance ? "" : "static ";