Add landing zone bundle

[coryodaniel]

Create a landing zone bundle that accepts N artifacts and produces a combined 'landing zone' artifact.

This bundle:

• Accepts multiple input artifacts (network, security, logging, monitoring, etc.)
• Combines them into a single landing zone artifact
• Represents common cloud environment prerequisites
• Can be used as an environment default

This is a powerful pattern for:

• Standardizing environment setup
• Reducing repeated connections in the UI
• Enforcing environment-wide standards
• Simplifying the developer experience

Example: A landing zone might combine VPC + DNS + logging + monitoring into one artifact that all applications connect to.