Voice binaries

These binaries were taken from the DSharpPlus 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.

Library	License
Opus	https://opus-codec.org/license/
libsodium	https://github.com/jedisct1/libsodium/blob/master/LICENSE