chore: move the go code into a subfolder

apps/api/internal/domain/federatedlogout/logout.go

@@ -0,0 +1,37 @@
+package federatedlogout
+
+type Index int
+
+const (
+	IndexUnspecified Index = iota
+	IndexRequestID
+)
+
+type FederatedLogout struct {
+	InstanceID            string
+	FingerPrintID         string
+	SessionID             string
+	IDPID                 string
+	UserID                string
+	PostLogoutRedirectURI string
+	State                 State
+}
+
+// Keys implements cache.Entry
+func (c *FederatedLogout) Keys(i Index) []string {
+	if i == IndexRequestID {
+		return []string{Key(c.InstanceID, c.SessionID)}
+	}
+	return nil
+}
+
+func Key(instanceID, sessionID string) string {
+	return instanceID + "-" + sessionID
+}
+
+type State int
+
+const (
+	StateCreated State = iota
+	StateRedirected
+)