Include <version> in detail/common.h (~stolen~ borrowed from @bstaletic's pybind#2816)

Author: YannickJadoul

include/pybind11/detail/common.h

@@ -162,6 +162,11 @@
 #include <memory>
 #include <typeindex>
 #include <type_traits>
+#if defined(__has_include)
+#  if __has_include(<version>)
+#    include <version>
+#  endif
+#endif
 
 #if PY_MAJOR_VERSION >= 3 /// Compatibility macros for various Python versions
 #define PYBIND11_INSTANCE_METHOD_NEW(ptr, class_) PyInstanceMethod_New(ptr)