add server to monorepo.

packages/server/src/models/Currency.ts

@@ -0,0 +1,21 @@
+import TenantModel from 'models/TenantModel';
+
+export default class Currency extends TenantModel {
+  /**
+   * Table name
+   */
+  static get tableName() {
+    return 'currencies';
+  }
+
+  /**
+   * Timestamps columns.
+   */
+  get timestamps() {
+    return ['createdAt', 'updatedAt'];
+  }
+
+  static get resourceable() {
+    return true;
+  }
+}