feat: suppression d'un projet

src/services/group.service.ts

@@ -16,4 +16,8 @@ export class GroupService extends BaseService {
 
     return this.post<Group>("group/add",body);
   }
+
+  public deleteGroup(id_group:number):Observable<void>{
+    return this.delete<void>(`group/delete?id=${id_group}`);
+  }
 }