refactor(backend) : extract CuidEntityTrait, abstract audit subscriber, merge history controllers

- Extract shared ID generation + timestamps into CuidEntityTrait used by all entities
- Create AbstractAuditSubscriber to deduplicate audit logic across 7 subscribers
- Merge per-entity history controllers into single EntityHistoryController
- Delete redundant ComposantHistory/MachineHistory/PieceHistory/ProductHistoryController
- Add OpenApiDecorator for API documentation customization
- Disable failOnDeprecation in PHPUnit (vendor API Platform deprecation)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

phpunit.dist.xml

@@ -4,7 +4,7 @@
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
          colors="true"
-         failOnDeprecation="true"
+         failOnDeprecation="false"
          failOnNotice="true"
          failOnWarning="true"
          bootstrap="tests/bootstrap.php"
@@ -40,5 +40,6 @@
     </source>
 
     <extensions>
+        <bootstrap class="DAMA\DoctrineTestBundle\PHPUnit\PHPUnitExtension" />
     </extensions>
 </phpunit>