Refactored DeleteObjectProcedureValidator, InsertObjectProcedureValidator, and UpdateObjectProcedureValidator to use .IsInEnum() for validating the Entity property. This replaces custom or hardcoded checks with enum-based validation, improving consistency, maintainability, and robustness across all validators.
Introduced DeleteObjectProcedureValidator using FluentValidation to ensure Start is greater than 0 and End is greater than or equal to Start, with custom error messages for each rule.
