feat(): update basic spot/futures examples with initial types

examples/deprecated-V1-REST/rest-public-futures.ts

@@ -0,0 +1,30 @@
+import { FuturesClient, WebsocketClient } from '../../src/index';
+
+// or
+// import { SpotClient } from 'bitget-api';
+
+const futuresClient = new FuturesClient();
+
+const symbol = 'BTCUSDT_UMCBL';
+
+(async () => {
+  try {
+    // Fetch the last 1000 1min candles for a symbol
+    const timestampNow = Date.now();
+    const msPerCandle = 60 * 1000; // 60 seconds x 1000
+    const candlesToFetch = 1000;
+    const msFor1kCandles = candlesToFetch * msPerCandle;
+    const startTime = timestampNow - msFor1kCandles;
+
+    const response = await futuresClient.getCandles(
+      symbol,
+      '1m',
+      startTime.toString(),
+      timestampNow.toString(),
+      candlesToFetch.toString(),
+    );
+    console.log('getCandles returned ' + response.length + ' candles');
+  } catch (e) {
+    console.error('request failed: ', e);
+  }
+})();