Add Voice binaries (#1944)

* Add binaries and read me

* Update sending voice docs

* Undo markdown formatting

voice-natives/README.md

@@ -0,0 +1,12 @@
+# Voice binaries
+
+These binaries were taken from the [DSharpPlus](https://dsharpplus.github.io/natives/index.html) website and are temporary until we resolve the old url for them.
+
+**NOTE**: You need to rename libopus.dll to opus.dll before use, otherwise audio client will complain about missing libraries.
+
+#### Licenses
+
+|  Library  | License                                                   |
+| :-------: | :-------------------------------------------------------- |
+|   Opus    | https://opus-codec.org/license/                           |
+| libsodium | https://github.com/jedisct1/libsodium/blob/master/LICENSE |