requirements: setup: Add urwidgets library for hyperlink support.

This commit adds the urwidgets library for including hyperlink support
in ZT using the OSC-8 escape sequence.

Author: theViz343

setup.py

@@ -105,5 +105,6 @@ def long_description():
         "pytz>=2022.7.1",
         "tzlocal>=2.1",
         "pyperclip>=1.8.1",
+        "urwidgets>=0.1,<0.2",
     ],
 )