feat: integrate music commands with Lavalink support

- Added new music commands: play, queue, and volume.
- Implemented music management using disgolink for Lavalink integration.
- Updated bot initialization to include Lavalink host and password.
- Enhanced interaction handling for music commands, requiring DJ role for usage.
- Introduced now playing message with interactive buttons for controlling playback.
- Updated dependencies in go.mod for disgolink and snowflake.

internal/commands/music/registry.go

@@ -0,0 +1,20 @@
+package music
+
+import (
+	"velox-bot/internal/commands/music/public"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+var (
+	Play  *discordgo.ApplicationCommand = public.Play
+	Queue *discordgo.ApplicationCommand = public.Queue
+	Volume *discordgo.ApplicationCommand = public.Volume
+)
+
+func PlayHandler(s *discordgo.Session, i *discordgo.InteractionCreate) { public.PlayHandler(s, i) }
+func QueueHandler(s *discordgo.Session, i *discordgo.InteractionCreate) {
+	public.QueueHandler(s, i)
+}
+func VolumeHandler(s *discordgo.Session, i *discordgo.InteractionCreate) { public.VolumeHandler(s, i) }
+