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/config/config.go

@@ -8,10 +8,12 @@ import (
 )
 
 type Config struct {
-	BotToken string
-	AppID    string
-	GuildID  string
-	DBHost   string
+	BotToken      string
+	AppID         string
+	GuildID       string
+	DBHost        string
+	LavalinkHost  string
+	LavalinkPass  string
 }
 
 func LoadConfig() (*Config, error) {
@@ -39,10 +41,15 @@ func LoadConfig() (*Config, error) {
 		return nil, fmt.Errorf("DB_HOST is not set")
 	}
 
+	lavalinkHost := os.Getenv("LAVALINK_HOST")
+	lavalinkPass := os.Getenv("LAVALINK_PASSWORD")
+
 	return &Config{
-		BotToken: token,
-		AppID:    appID,
-		GuildID:  guildID,
-		DBHost:   dbHost,
+		BotToken:     token,
+		AppID:        appID,
+		GuildID:      guildID,
+		DBHost:       dbHost,
+		LavalinkHost: lavalinkHost,
+		LavalinkPass: lavalinkPass,
 	}, nil
 }