Consider renaming repository from packages to grid4earth

[tinaok]

The current repository name (GRID4EARTH/packages) suggests a generic collection of packages.

However, the repository is the distribution point for the Grid4Earth environment/meta-package.

Would it make sense to rename the repository to GRID4EARTH/grid4earth?

Potential benefits:

• Better alignment with the project branding and pip install grid4earth
• Clearer for users looking for the Grid4Earth package/environment.
• More intuitive repository discovery and documentation references.

Any thoughts?