Added install_requires keyword to setup call

Author: oleksandr-pavlyk

setup.py

@@ -458,6 +458,7 @@ def _get_cmdclass():
     ext_modules=extensions(),
     zip_safe=False,
     setup_requires=["Cython"],
+    install_requires=["numpy", "dpcpp_cpp_rt"],
     keywords="dpctl",
     classifiers=[
         "Development Status :: 3 - Alpha",