feat: add script for formatting examples

[jaschdoc]

The script is fairly simple and just helps with future updates. No fancy automatic fetching from the Flix repo. Just simple formatting.

[magnus-madsen]

Can this script be connected to the other script? We just want something simple, not some complex process.

[jaschdoc]

Probably? How do you want to connect it?

[magnus-madsen]

No idea. But can you look at package.json etc?

[jaschdoc]

I have given this some thought and it seems brittle to hook it up. It is just a script that prints the names of the files in the main flix repository that can be helpful when maintaining the sampleFiles.mjs file. It must be invoked from the examples dir in https://github.com/flix/flix

I could make it prompt for a path to the flix project but if the examples dir changes it relative path in the main repo, then this script could break. Otherwise, it would have to prompt for the full path to the examples dir. Either way, it is such a simple helper thing that adding infrastructure around it seems like overkill.

[jaschdoc]

Closing this for now.