Manage defaults for links in the organization-config package

[marcomontalbano]

Closes #59

What I did

This pull request enhances the default behavior and robustness of the getMfeConfig function in the organization-config package. It introduces a new mechanism for providing default MFE configuration links even when no explicit configuration is present.

Checklist

• Make sure your changes are tested (stories and/or unit, integration, or end-to-end tests).
• Make sure to add/update documentation regarding your changes.
• You are NOT deprecating/removing a feature.