chore: import clean Agent Desk snapshot (2/7)

internal/pkg/dto/response/customer_session_response.go

@@ -0,0 +1,13 @@
+package response
+
+type CustomerSessionCustomerResponse struct {
+	ID   int64  `json:"id"`
+	Name string `json:"name"`
+}
+
+type CustomerSessionExchangeResponse struct {
+	CustomerSessionToken string                          `json:"customerSessionToken"`
+	ExpiresAt            string                          `json:"expiresAt"`
+	IdentityKey          string                          `json:"identityKey"`
+	Customer             CustomerSessionCustomerResponse `json:"customer"`
+}