PORTS: Add ns.nextPortWrite() as a safer option (#1036)

src/ScriptEditor/NetscriptDefinitions.d.ts

@@ -6644,6 +6644,17 @@ export interface NS {
    */
   tryWritePort(portNumber: number, data: string | number): boolean;
 
+  /**
+   * Listen for a port write.
+   * @remarks
+   * RAM cost: 0 GB
+   *
+   * Sleeps until the port is written to.
+   *
+   * @param port - Port to listen for a write on. Must be a positive integer.
+   */
+  nextPortWrite(port: number): Promise<void>;
+
   /**
    * Read content of a file.
    * @remarks