feat(setting): étendre ContentSource avec champs de test et domain model

- Ajouter testSlug, testChapterNumber, baseUrl sur ContentSource (entité, domain model, migration)
- Exposer ces champs dans les Resources, Processors, Providers et Mapper
- Mettre à jour store Pinia, repository API et composants Vue (form, card, liste)

src/Domain/Setting/Application/CommandHandler/UpsertContentSourceCommandHandler.php

@@ -26,6 +26,8 @@ readonly class UpsertContentSourceCommandHandler
                     imageSelector: $command->imageSelector,
                     nextPageSelector: $command->nextPageSelector,
                     chapterSelector: $command->chapterSelector,
+                    testSlug: $command->testSlug,
+                    testChapterNumber: $command->testChapterNumber,
                 );
                 $this->contentSourceRepository->save($contentSource);
             }
@@ -38,6 +40,8 @@ readonly class UpsertContentSourceCommandHandler
                 imageSelector: $command->imageSelector,
                 nextPageSelector: $command->nextPageSelector,
                 chapterSelector: $command->chapterSelector,
+                testSlug: $command->testSlug,
+                testChapterNumber: $command->testChapterNumber,
             );
             $this->contentSourceRepository->save($contentSource);
         }