chore: create user, collection and link models, migrations and seeders

app/models/app_base_model.ts

@@ -1,5 +1,29 @@
-import { BaseModel, CamelCaseNamingStrategy } from '@adonisjs/lucid/orm';
+import { BaseModel, CamelCaseNamingStrategy, beforeCreate, column } from '@adonisjs/lucid/orm';
+import { DateTime } from 'luxon';
+import { v4 as uuidv4 } from 'uuid';
 
 export default class AppBaseModel extends BaseModel {
   static namingStrategy = new CamelCaseNamingStrategy();
+  static selfAssignPrimaryKey = true;
+
+  @column({ isPrimary: true })
+  declare id: string; // UUID
+
+  @column.dateTime({
+    autoCreate: true,
+    serializeAs: 'createdAt',
+  })
+  declare createdAt: DateTime;
+
+  @column.dateTime({
+    autoCreate: true,
+    autoUpdate: true,
+    serializeAs: 'updatedAt',
+  })
+  declare updatedAt: DateTime;
+
+  @beforeCreate()
+  static assignUuid(item: any) {
+    item.id = uuidv4();
+  }
 }