Add cmip7 stac

[downiec]

Description

Fixes # (issue)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

• Local Pre-commit Checks
• CI/CD Build

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• My changes generate no new warnings
• If applicable - I have commented my code, particularly in hard-to-understand areas
• If applicable - I have made corresponding changes to the documentation
• If applicable - I have added tests that prove my fix is effective or that my feature works
• If applicable - New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules