feat(convert): Allow any database configuration when converting - #65209

• Resolves: Support all database configuration options for DB migrations #65208

Summary

When doing database conversion, use a second config.php file in the same location as the first (with a different name) to configure the target database connection.

TODO

• Update https://github.com/nextcloud/documentation/blob/master/admin_manual/configuration_database/db_conversion.rst -> feat(convert): Allow any database configuration when converting:x documentation#15738

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included - No tests exist for database conversion
• Screenshots before/after for front-end changes - No front end
• Documentation -> feat(convert): Allow any database configuration when converting:x documentation#15738
• Backports requested where applicable (ex: critical bugfixes) - no backport required
• Labels added where applicable (ex: bug/enhancement, 3. to review, feature component)
• Milestone added for target branch/version (ex: 32.x for stable32)

AI (if applicable)

• The content of this PR was partly or fully generated using AI - No AI used