Refactored controller errors

[joeljoby02]

#Standardize Controller Error Creation based on issue #70

• Added centralized createError(status, message, details) helper in utils.js
• Replaced ad-hoc Object.assign() error construction with createError() in controller files
• Updated error handling in crud, delete, release, overwrite, and search
• Preserved existing error behavior and validated with route mounting tests

[allenbakki]

Looks good to me. The validation check for an empty JSON object is clear and prevents accidental broad queries, which is important. Also, pulling the error creation into a separate function is a solid approach. It keeps things cleaner and makes the error handling logic easier to maintain and reuse.