patch that turns uxnbot.lua into uxnrepl.lua

uxnbot.patch

--- uxnbot.lua  2022-10-20 21:33:58.783691604 -0400
+++ uxnrepl.lua 2022-10-20 21:33:14.229193549 -0400
@@ -1201,6 +1201,12 @@
     end
 end
 local chat = require('chat')
+print('uxnrepl (ctrl-d to quit)')
+io.write('> ')
+io.flush()
 for l in io.stdin:lines() do
   print(chat(l))
+  io.write('> ')
+  io.flush()
 end
+print('bye!')