Move StackBlitz examples into the repository

[ddubrava]

🚀 Feature Request

✍️ Description

We should generate examples from the actual code instead of using external StackBlitz projects.

1. We can validate all examples using the actual code => catch bugs.
2. It saves a lot of time since we don't need to update dependencies in all examples.

[ddubrava]

https://developer.stackblitz.com/guides/integration/create-with-sdk

[ddubrava]

https://developer.stackblitz.com/guides/integration/open-from-github

[ddubrava]

Maybe it's possible to store all examples in the monorepo, since it's very easy to maintain them. And then we can open this url using stackblitz SDK