[3722] Write compose performance guidelines

[MarinTolic]

🎯 Goal

Satisfies the first acceptance criteria of #3722

🛠 Implementation details

Wrote a guide that touched upon the most common mistakes found in our codebase.

🧪 Testing

1. Read the guideline
2. Suggestions are welcome
3. Please comment on how informative this was, if it will help you write more performant code going forward. etc.

☑️Contributor Checklist

General

• [ ] I have signed the Stream CLA (required)
• [ ] Assigned a person / code owner group (required)
• [ ] Thread with the PR link started in a respective Slack channel (#android-chat-core or #android-chat-ui) (required)
• [ ] PR targets the develop branch
• [ ] PR is linked to the GitHub issue it resolves

Code & documentation

• [x] Changelog is updated with client-facing changes

☑️Reviewer Checklist

• [ ] Read the guide and verify it makes sense and is informative

🎉 GIF