WIP: [Not currently working on this] [Database] Rename convdev table to devopsscore table

What does this MR do?

Issue: #20976 (closed)

This MR is part of a multi-MR fix for renaming ConvDev Index to DevOps Score. The changes are broken down into smaller, independently deploy-able chunks, with the user facing changes coming in last.

This MR changes a table name, which will require a downtime or having data copied over to a new table in the background and then finally switching tables.

I am still wondering if the table name change is worth this effort.

Screenshots

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers

Security

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• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
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