Add linting

[qw-in]

It would be fantastic to add linting to the examples. The quick biome via trunk configuration is not sparking joy.

Tricky part is it would optimally work with trunk and each example however trunk tends to break as soon as multiple configuration files are used (with biome and eslint in my testing).

I think I will look at opting out of trunk and configuring linting on each example individually (biome would need minimal configuration)