/usr/include/ is in libvw-dev 8.1.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/vowpalwabbit/
/usr/include/vowpalwabbit/parser.h
/usr/include/vowpalwabbit/comp_io.h
/usr/include/vowpalwabbit/hash.h
/usr/include/vowpalwabbit/example.h
/usr/include/vowpalwabbit/io_buf.h
/usr/include/vowpalwabbit/parse_primitives.h
/usr/include/vowpalwabbit/allreduce.h
/usr/include/vowpalwabbit/global_data.h
/usr/include/vowpalwabbit/config.h
/usr/include/vowpalwabbit/vw.h
/usr/include/vowpalwabbit/loss_functions.h
/usr/include/vowpalwabbit/learner.h
/usr/include/vowpalwabbit/simple_label.h
/usr/include/vowpalwabbit/vwdll.h
/usr/include/vowpalwabbit/v_array.h