'bool' not included in `ze_loader.h`

[TApplencourt]

For https://github.com/oneapi-src/level-zero/blob/de1e9f42641cf7513672c2f3a5c306034a4f7e96/include/loader/ze_loader.h#L94 , #include <stdbool.h> need to be include (or use the ze_bool_t defined in ze_api I suppose )