feat(VoiceCloseCodes): add enum for DAVE protocol required

Author: execaman

src/Typings/Voice/VoiceManager.ts

@@ -138,6 +138,11 @@ export const enum VoiceCloseCodes {
    */
   UnknownEncryptionMode,
 
+  /**
+   * This channel requires a client supporting [E2EE via the DAVE Protocol](https://docs.discord.com/developers/topics/voice-connections#end-to-end-encryption-dave-protocol)
+   */
+  DAVEProtocolRequired,
+
   /**
    * You sent a malformed request.
    */