VSN-2581 : Adding feature of fetching tender web id based on tender uuid to be used in the "avis" type doc test.

Merge Request Description

Repository Method Addition

A new repository method has been introduced to enable fetching the tender web identifier based on its UUID.
This provides the foundational data access layer required for subsequent service and controller implementations.

Service Declaration and Implementation

A dedicated service has been declared and implemented to encapsulate the logic of retrieving the tender web identifier by UUID.
This ensures a clear separation of concerns and centralizes the business logic for easier maintenance and testing.

Feature Exposure via Controller

The newly implemented service has been exposed through a controller endpoint.
This allows external consumers to access the functionality in a standardized way, ensuring integration with other system components.

Documentation Update

The changelog has been updated to reflect the addition of the new feature.
This ensures that project documentation remains accurate and provides visibility into the changes introduced.

Closes VSN-2581