New features for Stats

### Issue Details

Those features will be good for application.

### Proposed solution

1. **Real-time Speed Monitoring**

* Monitor download and upload speeds in real-time to assess VPN performance instantly.

2. **Data Saved by Blocking Ads, Trackers, and Malicious Content**

* Track how much data is saved by blocking ads, trackers, and harmful domains.

3. **Weekly/Monthly Data Usage Graphs**

* Visualize data usage over the past week or month to understand your consumption patterns.

4. **Connection Stability and Disconnection Logs**

* Keep a log of disconnections and connection stability to diagnose any network issues.

5. **Unusual Usage Alerts**

* Receive alerts for any abnormal data usage or potential security risks, like sudden spikes or location changes.

6. **DNS Leak Test Results and History**

* Track DNS leak test results and history to ensure your privacy and security are intact.

### Alternative solution

_No response_