Implement package dependency management system

[scottbrown]

Problem

No system to manage dependencies between packages or ensure packages are installed in the correct order.

Solution

Create package dependency system:

• Package dependency declarations
• Automated dependency resolution
• Installation order management
• Conflict detection and resolution

Benefits

• Reliable package installation regardless of order
• Clear dependency relationships
• Reduced installation failures
• Better package organization

Implementation Notes

• Define dependency syntax for packages
• Create dependency resolver
• Support optional and required dependencies
• Add dependency visualization tools
• Document dependency management for package creators