- npm updates

- renamed 'models' and 'validators' folders
- removed unneccessary files in contracts folder

app/models/collection.ts

@@ -0,0 +1,54 @@
+import { column, SnakeCaseNamingStrategy, manyToMany, belongsTo } from '@adonisjs/lucid/orm';
+import Dataset from './dataset.js';
+import BaseModel from './base_model.js';
+import CollectionRole from './collection_role.js';
+import type { ManyToMany } from "@adonisjs/lucid/types/relations";
+import type { BelongsTo } from "@adonisjs/lucid/types/relations";
+
+export default class Collection extends BaseModel {
+    public static namingStrategy = new SnakeCaseNamingStrategy();
+    public static primaryKey = 'id';
+    public static table = 'collections';
+    public static fillable: string[] = ['name', 'number', 'role_id'];
+
+    @column({
+        isPrimary: true,
+    })
+    public id: number;
+
+    @column({})
+    public document_id: number;
+
+    @column({})
+    public role_id?: number;
+
+    @column({})
+    public number?: string;
+
+    @column({})
+    public name: string;
+
+    @column({})
+    public oai_subset?: string;
+
+    @column({})
+    public parent_id?: number;
+
+    @column({})
+    public visible: boolean;
+
+    @column({})
+    public visible_publish: boolean;
+
+    @manyToMany(() => Dataset, {
+        pivotForeignKey: 'collection_id',
+        pivotRelatedForeignKey: 'document_id',
+        pivotTable: 'link_documents_collections',
+    })
+    public datasets: ManyToMany<typeof Dataset>;
+
+    @belongsTo(() => CollectionRole, {
+        foreignKey: 'role_id',
+    })
+    public collectionRole: BelongsTo<typeof CollectionRole>;
+}