fix: test each example individually

[achingbrain]

The current CI setup hoists all deps to the root which makes it
hard to spot when individual examples are missing dependencies.

This change switches up CI to run the tests for each example in
isolation so we should know when a dep is missing.

It also better reflects how js-ipfs tests the examples in CI.

[oliveriosousa]

Hi @achingbrain

It makes sense and I agree with you. But in my opinion we should test as a mono repo too, to check if the dependencies are being installed correctly (had problems in the past with vue for example).

Maybe we could have 2 build in parallel running as a mono repo and standalone. What do you think?

However, I don't know if it will exceed the Github Action free tier 🤔

[achingbrain]

But in my opinion we should test as a mono repo too, to check if the dependencies are being installed correctly (had problems in the past with vue for example).

I've added this back in.

I don't know if it will exceed the Github Action free tier

Me neither, I guess we'll find out 😆