add @discordjs/opus + jmd.js

node_modules/@discordjs/opus/README.md

@@ -0,0 +1,25 @@
+# @discordjs/opus [![Build](https://github.com/discordjs/opus/workflows/Build/badge.svg)](https://github.com/discordjs/opus/actions?query=workflow%3ABuild) [![Prebuild](https://github.com/discordjs/opus/workflows/Prebuild/badge.svg)](https://github.com/discordjs/opus/actions?query=workflow%3APrebuild)
+> Native bindings to libopus v1.3
+
+## Usage
+
+```js
+const { OpusEncoder } = require('@discordjs/opus');
+
+// Create the encoder.
+// Specify 48kHz sampling rate and 2 channel size.
+const encoder = new OpusEncoder(48000, 2);
+
+// Encode and decode.
+const encoded = encoder.encode(buffer);
+const decoded = encoder.decode(encoded);
+```
+
+## Platform support
+⚠ Node.js 12.0.0 or newer is required.
+
+- Linux x64 & ia32
+- Linux arm (RPi 1 & 2)
+- Linux arm64 (RPi 3)
+- macOS x64
+- Windows x64