Ensure cursor is positioned appropriately if it is not at the end of a line when async prints arrive

lib/rex/ui/text/output.rb

@@ -61,11 +61,13 @@ class Output < Rex::Ui::Output
   end
 
   def print_line(msg = '')
+    print("\033[s") # Save cursor position
     print("\r\033[K" + msg + "\n")
     if input and input.prompt
       print("\r\033[K")
       print(input.prompt)
       print(input.line_buffer)
+      print("\033[u\033[B") # Restore cursor, move down one line
     end
   end