Allow to bridge non-bot Discord users (discord) (#689)

If you prefix a token with `User ` it'll treat is as a user token.

Co-Authored-By: zomboy-alfrir <zomboy@dancodes.com.ar>

bridge/discord/discord.go

@@ -61,6 +61,11 @@ func (b *Bdiscord) Connect() error {
 	if !strings.HasPrefix(b.GetString("Token"), "Bot ") {
 		token = "Bot " + b.GetString("Token")
 	}
+	// if we have a User token, remove the `Bot` prefix
+	if strings.HasPrefix(b.GetString("Token"),"User ") {
+	   token = strings.Replace(token,"Bot ","",-1)
+	}
+	
 	b.c, err = discordgo.New(token)
 	if err != nil {
 		return err