adding caching dataloader, minor cleaup

[daviddpruitt]

Modulus Pull Request

Description

Adds caching dataloader to SFNO

Checklist

• [X] I am familiar with the Contributing Guidelines.
• [ ] New or existing tests cover these changes.
• [ ] The documentation is up to date with these changes.
• [ ] The CHANGELOG.md is up to date with these changes.
• [ ] An issue is linked to this pull request.

Dependencies

No dependencies.