Discord API wrapper

[Guichaguri]

There are some reasons to create my own API wrapper instead of using someone's else like speed, better control over packets.

Planned features:

• [X] Basic Discord Gateway
• [X] Basic packet listening
• [X] No cache over users, roles, channels
• [X] Audio Gateway
• [X] Audio UDP Socket
• [X] Basic Audio conversion (PCM to Opus)
• [X] Discord Gateway compression
• [X] libsodium audio encryption
• [x] Audio packets
• [ ] Optional caching (components can request it)

[Guichaguri]

I'll consider it finished. Optional caching is not important, I'll leave it for the future in case we need it :)