fix(platform): Refresh doc setup instruction

[majdyz]

Background

The development setup has changed a lot, and some of the instructions is no longer valid.

Changes 🏗️

• Update setup instruction
• Simplify the prerequisite by not forcing yarn.
• Reduce explicit cds and reduce the amount.

Testing 🔍

Note

Only for the new autogpt platform, currently in autogpt_platform/

• Create from scratch and execute an agent with at least 3 blocks
• Import an agent from file upload, and confirm it executes correctly
• Upload agent to marketplace
• Import an agent from marketplace and confirm it executes correctly
• Edit an agent from monitor, and confirm it executes correctly

[qodo-merge-pro]

PR Reviewer Guide 🔍

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Key issues to review Inconsistent Command The README suggests using both npm and yarn for frontend setup, which may confuse users. It's better to stick to one package manager for consistency. Missing Information The setup instructions don't mention the need for an OpenAI API key, which is likely required for the AutoGPT platform to function properly.

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[aarushik93]

cc @Bentlybro

[Bentlybro]

Thanks for the tag @aarushik93 ill go over this first thing in the morning!

[ntindle]

Consider looking into this https://squidfunk.github.io/mkdocs-material/reference/content-tabs/#grouping-code-blocks-c for yarn/npm

[majdyz]

Consider looking into this https://squidfunk.github.io/mkdocs-material/reference/content-tabs/#grouping-code-blocks-c for yarn/npm

I removed entirely the occurrence of yarn on mkdocs documentation, the one remain is the readme.md on the repository.

Addressed, please re-review