Rename files to match Eclipse config menus

[aj-stein-nist]

Committer Notes

Per discussion during code pairing on metaschema-java code, rename the three files appropriately to match the relevant menu and sub-menus for import in current stable Eclipse IDE for Java (Version: 2023-12 (4.30.0) Build id: 20231201-2043).

• [Java] > Code Style > Cleanup
• [Java] > Code Style > Formatter
• [Java] > Code Style > Import Order

All Submissions:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Have you squashed any non-relevant commits and commit messages? [instructions]
• Do all automated CI/CD checks pass?

Changes to Core Features:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you included examples of how to use your new feature(s)? They are inherently examples of their configuration
• Have you written new tests for your core changes, as applicable? N/A for IDE configuration
• Have you updated all website and readme documentation affected by the changes you made? Note, I would like to make a screencast or addition to the wiki of screenshots of how to add this for my own memory (I end up having to do this once every quarter or half a year due to system reconfiguration, @david-waltermire.)