Provide more relevant uses of the specification

[fmigneault]

🚀 Feature Request

Any relevant documentation, papers, or projects demonstrating STAC MLM with concrete examples should be showcased in the README. This issue is to track any such relevant reference.

• IGARSS 2025 presentation by @rbavery
• CRIM project by @fmigneault

🔉 Motivation

Demonstrate the adaptability of the specification and provide applicable examples to guide potential new adopters.

📡 Contributions

Everyone is welcome to share their own use cases and example material.