dpctl.lsplatform() does not output in jupyter notebook

[oleksandr-pavlyk]

dpctl.lsplatform() produces an intended output when called in a terminal, but produces no output when called from jupyter notebook.

At the same time dev.print_device_info() works fine from both.

The issue is for lsplatform to also work from jupyter notebook.

[oleksandr-pavlyk]

dpctl.lsplatform() uses std::cout stream to output platform information, https://github.com/IntelPython/dpctl/blob/master/dpctl/_sycl_platform.pyx#L350
while SyclDevice.print_device_info() uses Python's stream:
https://github.com/IntelPython/dpctl/blob/master/dpctl/_sycl_device.pyx#L289

The fix would be to introduce SYCLInterface function to return "char *" instead of outputting it, and use that to print using CPython.