It would have to be written, unless someone has one already that I'm not aware of.
We may be able to help once things are less busy, but probably not for a few days at least.
There's some discussion of a similar idea here if anyone else wants to have a go:
A variable could be used as the trigger instead of the example which triggers based on the folder path. A button pr hotkey could then toggle the variable. Alternatively, the script could potentially use WMI to detect the monitor configuration and do things automatically, but that's more complex.
It's also worth noting that if you have Windows set to use a different DPI on your TV then font size changes are handled automatically if using the Opus 12 public beta.