add server to monorepo.

packages/server/src/models/Role.ts

@@ -0,0 +1,33 @@
+import { Model, mixin } from 'objection';
+import TenantModel from 'models/TenantModel';
+
+
+export default class Role extends TenantModel {
+  /**
+   * Table name
+   */
+  static get tableName() {
+    return 'roles';
+  }
+
+  /**
+   * Relationship mapping.
+   */
+  static get relationMappings() {
+    const RolePermission = require('models/RolePermission');
+
+    return {
+      /**
+       *
+       */
+      permissions: {
+        relation: Model.HasManyRelation,
+        modelClass: RolePermission.default,
+        join: {
+          from: 'roles.id',
+          to: 'role_permissions.roleId',
+        },
+      },
+    };
+  }
+}