Support static methods in template classes

E.g.,

```cpp
namespace vineyard {
template
class A {
public:
static void *Create() {
return nullptr;
}
};
}
```

The issue names no files, tests, or entry points. Start by locating the template-class handling in the repository and trace how member methods are recognized, then check how generated bindings are tested. Done means the shown templated class can expose its static Create method through fastFFI without regressing existing template support.

Written by the indexing model from the issue text.