Implement Metrics Manager and Integrate Metrics Collection

- Removed the existing readme.opsserver.md file as it is no longer needed.
- Added a new MetricsManager class to handle metrics collection using @push.rocks/smartmetrics.
- Integrated MetricsManager into the DcRouter and OpsServer classes.
- Updated StatsHandler and SecurityHandler to retrieve metrics from MetricsManager.
- Implemented methods for tracking email, DNS, and security metrics.
- Added connection tracking capabilities to the MetricsManager.
- Created a new readme.metrics.md file outlining the metrics implementation plan.
- Adjusted plugins.ts to include smartmetrics.
- Added a new monitoring directory with classes for metrics management.
- Created readme.module-adjustments.md to document necessary adjustments for SmartProxy and SmartDNS.

ts/monitoring/index.ts

@@ -0,0 +1 @@
+export * from './classes.metricsmanager.js';