Setup.cfg: Make sure UI package is included

Author: jwijenbergh

setup.cfg

@@ -26,7 +26,9 @@ classifiers =
     Topic :: System :: Operating System Kernels :: Linux
 
 [options]
-packages = eduvpn
+packages =
+    eduvpn
+    eduvpn.ui
 python_requires = >= 3.6
 install_requires =
     eduvpn_common >= 2.0.0,< 3.0.0