Livestream tutorial

[martinmitrevski]

🎯 Goal

Adjust the livestream tutorial to the one on Android: https://getstream.io/video/docs/android/tutorials/livestream/.

☑️ Contributor Checklist

• I have signed the Stream CLA (required)
• This change follows zero ⚠️ policy (required)
• This change should receive manual QA
• Changelog is updated with client-facing changes
• New code is covered by unit tests
• Comparison screenshots added for visual changes
• Affected documentation updated (Docusaurus, tutorial, CMS)

🎁 Meme

[ipavlidakis]

Looks really good. I wanted to suggest onto making the first steps (that the seem to be very similar with the other tutorials) to match to provide consistency for the reader (the first 3 steps seems to be very similar to all our tutorials)