feat(): add/update missing v5 market endpoints. add api doc examples for each endpoint.

examples/apidoc/V5/Market/get-open-interest.js

@@ -0,0 +1,20 @@
+const { RestClientV5 } = require('bybit-api');
+
+const client = new RestClientV5({
+  testnet: true,
+});
+
+client
+  .getOpenInterest({
+    category: 'inverse',
+    symbol: 'BTCUSD',
+    intervalTime: '5min',
+    startTime: 1669571100000,
+    endTime: 1669571400000,
+  })
+  .then((response) => {
+    console.log(response);
+  })
+  .catch((error) => {
+    console.error(error);
+  });