Automatically include an `*ifid` in new projects

There’s a new ChoiceScript command, [`*ifid`](https://forum.choiceofgames.com/t/new-in-choicescript-ifid-command/112889). An “IFID” is an “Interactive Fiction IDentifier,” and it’s used to uniquely identify interactive fiction files for archival purposes, like an ISBN number for books.

https://babel.ifarchive.org/

It would be great if the ChoiceScript IDE were to automatically generate a UUID and include it in the auto-generated `startup.txt` file. (This is how other interactive fiction IDEs work, such as Inform and Twine, under the [Treaty of Babel](https://babel.ifarchive.org/).)