feat: add vuid removal function

Author: mikechu-optimizely

lib/plugins/vuid_manager/index.ts

@@ -1,5 +1,5 @@
 /**
- * Copyright 2022-2023, Optimizely
+ * Copyright 2022-2024, Optimizely
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -123,6 +123,14 @@ export class VuidManager implements IVuidManager {
     await cache.set(this._keyForVuid, vuid);
   }
 
+  /**
+   * Removes the VUID from the cache
+   * @param cache Caching mechanism to use for persisting the VUID outside working memory
+   */
+  async remove(cache: PersistentKeyValueCache): Promise<void> {
+    await cache.remove(this._keyForVuid);
+  }
+
   /**
    * Validates the format of a Visitor Unique Identifier
    * @param vuid VistorId to check