add profile struct

auth/auth.go

@@ -18,13 +18,17 @@ type RedirResp struct {
 }
 
 type LauncherSession struct {
-	// Username  string
+	// Username string
 	// DiscordId    string
 	SessionToken string
 	InstallId    string
 	Expiry       time.Time
 }
 
+type ProfileResp struct {
+	Username string
+}
+
 type ValidateReq struct {
 	LauncherToken string
 }