Python SequentialReader does not bind close method

[oysstu]

rosbag2/rosbag2_py/src/rosbag2_py/_reader.cpp

Line 81 in 3c6ef95

pybind11::class_<PyReader>(m, "SequentialReader")

Intended to open and close a bag in the __enter__ and __exit__ methods of a class, and noticed that the close() function is not exposed through pybind11.

[yassine-cherni]

you should add a .def("close", &PyReader::close)

[christophebedard]

Yeah, exposing the close() methods makes sense.

[oysstu]

Fixed in #1935