Add bisqJS and liquidJS npm modules.

examples/nodejs/liquid-js/fees.ts

@@ -0,0 +1,18 @@
+import mempoolJS from "./../../../src/index";
+
+const init = async () => {
+  try {
+    const {
+      liquid: { fees },
+    } = mempoolJS();
+    
+    const feesRecommended = await fees.getFeesRecommended();
+    console.log(feesRecommended);
+    
+    const feesMempoolBlocks = await fees.getFeesMempoolBlocks();
+    console.log(feesMempoolBlocks);
+  } catch (error) {
+    console.log(error);
+  }
+};
+init();