feat: wip import resources

packages/server/src/services/Import/Importable.ts

@@ -1,7 +1,23 @@
+import { Knex } from 'knex';
 
+export abstract class Importable {
+  /**
+   *
+   * @param {number} tenantId
+   * @param {any} createDTO
+   * @param {Knex.Transaction} trx
+   */
+  public importable(tenantId: number, createDTO: any, trx?: Knex.Transaction) {
+    throw new Error(
+      'The `importable` function is not defined in service importable.'
+    );
+  }
 
-abstract class importable {
-
-
-  
-}
+  /**
+   * Concurrency controlling of the importing process.
+   * @returns {number}
+   */
+  public get concurrency() {
+    return 10;
+  }
+}