add doc section about libdave

Author: quinchs

docs/guides/toc.yml

@@ -143,7 +143,11 @@
 - name: Bearer Tokens
   topicUid: Guides.BearerToken
 - name: Voice
-  topicUid: Guides.Voice.SendingVoice
+  items:
+    - name: Connecting and Sending
+      topicUid: Guides.Voice.SendingVoice
+    - name: libdave Support
+      topicUid: Guides.Voice.LibDave
 - name: Polls
   topicUid: Guides.Polls
 - name: Deployment

docs/guides/voice/libdave.md

@@ -0,0 +1,38 @@
+---
+uid: Guides.Voice.LibDave
+title: Using libdave e2ee
+---
+
+# Setup
+
+You'll first need a build of Discords' [libdave](https://github.com/discord/libdave) library as either `libdave.dll`, `libdave.so` or `libdave.o` in your apps executing directory.
+
+Then, enable dave voice encryption in your socket config:
+
+```cs
+var client = new DiscordSocketClient(new DiscordSocketConfig()
+{
+    EnableVoiceDaveEncryption = true,
+    ...
+});
+```
+
+That's it, `libdave` will be used when sending/receiving voice.
+
+### libdave Log Sink
+
+By default, `libdave` writes its logs to standard output, you can override that by specifying a custom log sink:
+```cs
+Discord.LibDave.Dave.SetLogSink(MyLogSink);
+
+void MyLogSink(
+    Discord.LibDave.LoggingSeverity severity, 
+    string filePath,
+    int lineNumber,
+    string message
+)
+{
+    // do what you want with the logs
+    Console.WriteLine($"[{severity} | LIBDAVE @ {file}#{line}]: {message}");
+}
+```