[FABRIC] 2.0.0

Huge thanks to Totobird for being a huge help with this update! Their PR was the main reason I started working on it again.

All commands have been moved to subcommands on the /dvc command
- See https://github.com/naturecodevoid/voicechat-discord#using-it-in-game for docs
- /startdiscordvoicechat was moved to /dvc start
  - Running /dvc start while in a voice chat session restarts the session
- New subcommand: /dvc stop
  - Only usable while currently in a discord voice chat session
  - Disconnects the bot and stops the session
- New subcommand: /dvc group
  - See https://github.com/naturecodevoid/voicechat-discord#dvc-group for docs
- New subcommand: /dvc togglewhisper
  - Allows mod users to whisper
- New subcommand: /dvc reloadconfig
  - Only usable by operators or players with the voicechat-discord.reload-config permission
  - Stops all sessions and reloads the config
- New subcommand: /dvc checkforupdate
  - Only usable by operators
  - Checks for a new update using the GitHub API. If one is found, finds the version on Modrinth and links to the version page.
Group support (/dvc group)
- See https://github.com/naturecodevoid/voicechat-discord#dvc-group for docs
Whispering support (/dvc togglewhisper)
Added support for people using the mod to hear static/entity/locational audio channels
Use the new audio sender API to improve compatibility with other addons
[Fabric only] Use the Fabric Permissions API to support mods like LuckPerms for the reload config permission
Added version checker to ensure the plugin/mod is updated
Added Simple Voice Chat version checker to ensure we have a new enough version of the mod
Hopefully fixed #5
Better login failure error handling and logging
Improvements to messages sent to players to be more clear
Optional debug logging to hopefully help with debugging issues
Major refactors and command handling improvements