Include Pybind11 headers before anything else

See https://github.com/NVIDIA/nvbench/pull/237#discussion_r2183703828
for the rationale

python/src/py_nvbench.cpp

@@ -16,6 +16,12 @@
  *  limitations under the License.
  */
 
+// clang-format off
+// Include Pybind11 headers first thing
+#include <pybind11/pybind11.h>
+#include <pybind11/stl.h>
+// clang-format on
+
 #include <nvbench/nvbench.cuh>
 
 #include <cstdio>
@@ -27,9 +33,6 @@
 #include <utility>
 #include <vector>
 
-#include <pybind11/pybind11.h>
-#include <pybind11/stl.h>
-
 namespace py = pybind11;
 
 namespace