chore: publish documentation and use typed events

[amishshah]

Please describe the changes this PR makes and why it should be merged:

Publishes the documentation at https://discordjs.github.io/voice/ and uses typed EventEmitters for VoiceConnection and AudioPlayer.

The documentation isn't as nice as what we have on discord.js.org so far, but it's a step in the right direction :)

[codecov]

Codecov Report

Merging #84 (d09f83e) into main (b5385fc) will not change coverage.
The diff coverage is 33.33%.

@@           Coverage Diff           @@
##             main      #84   +/-   ##
=======================================
  Coverage   52.41%   52.41%           
=======================================
  Files          15       15           
  Lines         620      620           
  Branches      136      136           
=======================================
  Hits          325      325           
  Misses        293      293           
  Partials        2        2           

Impacted Files	Coverage Δ
src/audio/AudioPlayerError.ts	0.00% <ø> (ø)
src/audio/AudioResource.ts	43.47% <ø> (ø)
src/joinVoiceChannel.ts	0.00% <ø> (ø)
src/util/entersState.ts	0.00% <0.00%> (ø)
src/util/generateDependencyReport.ts	0.00% <ø> (ø)
src/VoiceConnection.ts	79.27% <100.00%> (ø)
src/audio/AudioPlayer.ts	77.34% <100.00%> (ø)

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