add --no-rich_log flag

use it to disable the RichLog and load the tui_no_log tcss.

update README and add no log screenshot

README.md

@@ -33,6 +33,11 @@ The TUI should now be discoverable as `vban-tui`
 vban-tui --host=localhost --port=6980 --streamname=Command1
 ```
 
+Additional Flags:
+
+- --rich_log/--no-rich_log: Use this to [disable the RichLog window](./img/tui-no_log.png).
+    -   This is useful if you're sending commands to Voicemeeter because you won't receive any responses anyway.
+
 ### Environment Variables
 
 example .envrc: