chore: update dependencies and configuration

- Added @discordjs/opus and opusscript to package.json and pnpm-lock.yaml.
- Updated pnpm-workspace.yaml to allow builds for @discordjs/opus.
- Imported dotenv in config.ts for environment variable management.
- Created .npmrc to manage npm configurations.

pnpm-workspace.yaml

@@ -4,6 +4,7 @@ packages:
   - vendor/discord.js-selfbot-v13
 
 allowBuilds:
+  '@discordjs/opus': true
   '@lng2004/node-datachannel': true
   better-sqlite3: true
   esbuild: true