fix(qwik-nx): preset generator should check for the presense of peerDeps

[dmitry-stepanenko]

What is it?

• [ ] Feature / enhancement
• [x] Bug
• [ ] Docs / tests

Description

When repository is created, peer dependencies are not installed by default. Because of this @nrwl/vite is not available and an error is thrown.

Along with this checking for the installed nx version should be improved: it's not enough to check for the presence of @nrwl/workspace in devDependencies

closes https://github.com/qwikifiers/qwik-nx/issues/89

Use cases and why

Screenshots/Demo

Checklist:

• [x] My code follows the developer guidelines of this project
• [x] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [ ] Added new tests to cover the fix / functionality