feat(analytics): add behavior and payment funnel tracking

src/stores/payment/payment-state.ts

@@ -18,6 +18,7 @@ export interface PaymentState {
   autoRenew: boolean;
   agreed: boolean;
   currentOrderId: string | null;
+  currentOrderPlanId: string | null;
   payParams: Record<string, unknown> | null;
   orderStatus: PaymentOrderStatus | null;
   orderPollingStartedAt: number | null;
@@ -34,6 +35,7 @@ export const initialState: PaymentState = {
   autoRenew: true,
   agreed: true,
   currentOrderId: null,
+  currentOrderPlanId: null,
   payParams: null,
   orderStatus: null,
   orderPollingStartedAt: null,