Initial commit: Extract base Zabbix GraphQl - API functionality from VCR Project and add dynamic schema samples

src/common_utils.ts

@@ -0,0 +1,8 @@
+export function sleep(ms: number): { promise: Promise<void>, cancel: () => void } {
+    let timeoutId: NodeJS.Timeout;
+    const promise = new Promise<void>((resolve) => {
+        timeoutId = setTimeout(resolve, ms);
+    });
+    const cancel = () => clearTimeout(timeoutId);
+    return { promise, cancel };
+}