Add AssitantType enums to gestion-modeles.

CHANGELOG.md

-## [0.0.30-RELEASE] 
+## [0.0.31-RELEASE]
+## Added
+- Add AssitantType enums to gestion-modeles.
+
+## [0.0.30-RELEASE]
 ### Added
--add entites assitant devoir 
+-add entites assitant devoir
+
 ## [0.0.29-RELEASE] 
 ### Added
 - Add gestion-modeles-service entities.

src/main/java/com/marketingconfort/brainboost_common/gestion_modeles/enums/AssitantType.java

+package com.marketingconfort.brainboost_common.gestion_modeles.enums;
+
+public enum AssitantType {
+    DEVOIR,
+    APPRENTISSAGE,
+    RECHERCHE
+}
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src/main/java/com/marketingconfort/brainboost_common/gestion_modeles/models/AIModel.java

 package com.marketingconfort.brainboost_common.gestion_modeles.models;
 
+import com.marketingconfort.brainboost_common.gestion_modeles.enums.AssitantType;
 import com.marketingconfort.brainboost_common.gestion_modeles.enums.ModelStatus;
 import com.marketingconfort.brainboost_common.gestion_modeles.enums.ModelType;
 import jakarta.persistence.*;
@@ -23,7 +24,8 @@ public class AIModel extends BaseEntity {
     private ModelStatus status;
     private LocalDateTime lastUpdate;
     private Integer ragServiceId;
-    private String assistantType;
+    @Enumerated(EnumType.STRING)
+    private AssitantType assistantType;
     @OneToMany(mappedBy = "model", cascade = CascadeType.ALL, orphanRemoval = true)
     private List<Version> versions;
 }
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