Add example projects in the documentation

[CrochetFeve0251]

Before submitting an issue please check that you’ve completed the following steps:

• The documentation is actually missing some concrete examples.

Describe the bug
We could solve that using some example repositories.

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Additional context
Add any other context about the problem here.

Backlog Grooming (for WP Media dev team use only)

• Reproduce the problem
• Identify the root cause
• Scope a solution
• Estimate the effort