v3.2.1: add instrument info response type. add cursor example with unified margin request

src/types/response/index.ts

@@ -1,3 +1,4 @@
 export * from './shared';
 export * from './spot';
 export * from './usdt-perp';
+export * from './unified-margin';

src/types/response/unified-margin.ts

@@ -0,0 +1,38 @@
+export interface UMLeverageFilter {
+  minLeverage: string;
+  maxLeverage: string;
+  leverageStep: string;
+}
+
+export interface UMPriceFilter {
+  minPrice: string;
+  maxPrice: string;
+  tickSize: string;
+}
+
+export interface UMLotSizeFilter {
+  maxTradingQty: string;
+  minTradingQty: string;
+  qtyStep: string;
+}
+
+export interface UMInstrumentInfo {
+  symbol: string;
+  contractType: string;
+  status: string;
+  baseCoin: string;
+  quoteCoin: string;
+  launchTime: string;
+  deliveryTime: string;
+  deliveryFeeRate: string;
+  priceScale: string;
+  leverageFilter: UMLeverageFilter;
+  priceFilter: UMPriceFilter;
+  lotSizeFilter: UMLotSizeFilter;
+}
+
+export interface UMInstrumentInfoResult {
+  category: string;
+  list: UMInstrumentInfo[];
+  nextPageCursor: string;
+}