[Feature] Adds a voice channel status with the currently playing song title!

[imnaiyar]

Features added!

• Updates the voice channel status with song title when player starts
• Resets it when player is stopped or queue ends
• Shows 'Paused' when player is paused and 'Playing' when resumed
• See attachments for references
  Voice channel status is only available on desktop clients, and bot needs 'Set Voice Channel Status' permission to perform these actions, it can also be edited by anyone with the permission, so they could change it to something else after the bot
  See relevant Discord API PR About this feature:- discord/discord-api-docs#6400

Changes are commented in each respective file.
I couldn't find some events in the lavaclient docs necessary for some of the features so I emitted custom events where applicable

This endpoint is undocumented and experimental and as such not possible through discord.js (yet). As it is undocumented, it may also be unstable

Please feel free to edit to improve or fix as you see fit.

Checklist

• Tested Locally
• Extensive Testing
• No Conflicts
• No Errors
• Stable