release: 0.2.1 (#7)

### Description

This release fixes an issue with the missing plugin config schema.
Without it the Backstage instance will not load.

## Acknowledgement

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copy, and redistribute this contribution, under the terms of your
choice.

**Disclaimer:** We value your time and bandwidth. As such, any pull
requests created on non-triaged issues might not be successful.

config.d.ts

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2023 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { PagerDutyAccountConfig, PagerDutyOAuthConfig } from '@pagerduty/backstage-plugin-common';
+
+export interface Config {
+    /**
+     * Configuration for the PagerDuty plugin
+     * @visibility frontend
+     */
+    pagerDuty?: {
+        /**
+         * Optional Events Base URL to override the default.
+         * @visibility frontend
+         */
+        eventsBaseUrl?: string;
+        /**
+         * Optional API Base URL to override the default.
+         * @visibility frontend
+         */
+        apiBaseUrl?: string;
+        /**
+         * Optional PagerDuty API Token used in API calls from the backend component.
+         * @visibility secret
+         */
+        apiToken?: string;
+        /**
+         * Optional PagerDuty Scoped OAuth Token used in API calls from the backend component.
+         * @deepVisibility secret
+         */
+        oauth?: PagerDutyOAuthConfig;
+
+        /**
+         * Optional PagerDuty multi-account configuration
+         * @deepVisibility secret
+         */
+        accounts?: PagerDutyAccountConfig[];
+    };
+}