[Feature] Maintain basic jitai-workspace directory structure in repository

[iSuperCoder]

Description

We need to maintain a basic jitai-workspace directory structure in the quickstart repository to help developers understand the standard workspace layout. This structure should serve as a template but exclude dynamically downloaded components.

Requirements

Directory Structure to Include:

• Basic workspace folder layout
• Configuration file templates
• Essential directories (home, apps, etc.)
• README files explaining each directory's purpose

Exclude from Repository:

• system/bin/builder (downloaded during init)
• system/bin/jitnode (downloaded during init)
• Framework applications (downloaded during init)
• Other components that should be fetched by cli.sh init at runtime

Expected Outcome

• A clear, documented directory structure that developers can reference
• Template files with comments explaining their purpose
• Documentation explaining which parts are dynamically downloaded vs. from the template directory in the code repository

Additional Context

This structure will be used as the foundation when developers run cli.sh init to set up their local development environment.