Added queue length method

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "description": "Orion Protocol SDK",
   "main": "./lib/esm/index.js",
   "module": "./lib/esm/index.js",

src/services/OrionBlockchain/index.ts

@@ -190,6 +190,10 @@ class OrionBlockchain {
     );
   }
 
+  getQueueLength() {
+    return fetchWithValidation(`https://${this.apiUrl}/api/queueLength`, z.number().int());
+  }
+
   getIDOInfo() {
     return fetchWithValidation(`https://${this.apiUrl}/api/solarflare`, IDOSchema);
   }