feat(opsserver): add configurable OpsServer port and update related tests and documentation

ts/remoteingress/classes.remoteingress-manager.ts

@@ -7,7 +7,7 @@ const STORAGE_PREFIX = '/remote-ingress/';
 /**
  * Flatten a port range (number | number[] | Array<{from, to}>) to a sorted unique number array.
  */
-function extractPorts(portRange: number | number[] | Array<{ from: number; to: number }>): number[] {
+function extractPorts(portRange: number | Array<number | { from: number; to: number }>): number[] {
   const ports = new Set<number>();
   if (typeof portRange === 'number') {
     ports.add(portRange);