[Work Item] Extend CSAPI support to additional entities

[Sam-Bolling]

📌 Task Description

Track implementation of additional CSAPI entities beyond core methods. Includes:

• getProcedures()
• getDeployments()
• getProperties()
• getSamplingFeatures()
• getDatastreams()
• getControlChannels()
• getSystemEvents()

Each method should follow the same modular, compositional design as existing CSAPI methods and be conditionally exposed via .connectedSystems based on capability detection.

✅ Acceptance Criteria

• All extended methods scoped and implemented
• Each method tested with mock data using vitest or jest
• Includes JSDoc comments for documentation
• Linked to milestone and project board

🔗 Related Links

• Implementation Plan
• Upstream Issue #118