add server to monorepo.

packages/server/src/models/CustomViewBaseModel.ts

@@ -0,0 +1,20 @@
+export default (Model) =>
+  class CustomViewBaseModel extends Model {
+    /**
+     * Retrieve the default custom views, roles and columns.
+     */
+    static get defaultViews() {
+      return [];
+    }
+
+    /**
+     * Retrieve the default view by the given slug.
+     */
+    static getDefaultViewBySlug(viewSlug) {
+      return this.defaultViews.find((view) => view.slug === viewSlug) || null;
+    }
+
+    static getDefaultViews() {
+      return this.defaultViews;
+    }
+  };