VSN-2233 : Adding mapping of establishments uai code column in the reference sheet of importation template.

Merge Request Description

Documentation Update

This validation introduces a changelog update to ensure that recent modifications are properly documented. It provides clarity on the changes made and maintains consistency in project records.

Refactor: Mapping of UAI Codes

This validation applies a refactor to implement the mapping of UAI codes within the reference sheet. The goal is to standardize how UAI codes are handled, improving maintainability and ensuring that data is consistently represented.

Feature: Establishment UAI Codes

This validation adds a new feature by introducing establishment UAI codes into the reference sheet request. It expands the dataset to include establishment-specific identifiers, enhancing the accuracy and completeness of the reference information.

Closes VSN-2233