Node Checker Improvements

Overview

This PR enhances the node-checker script with improved UI/UX and more accurate service detection capabilities.

Key Improvements

UI/UX Enhancements

• Added a more detailed and visually appealing banner
• Improved section headers with better formatting and visual separation
• Enhanced status indicators with color coding
• Better organization of information display
• More detailed system information output

Service Detection Improvements

• Added specific detection for Prysm client ports (12000 UDP, 13000 TCP, 30303 TCP/UDP)
• Improved standard client port detection (9000 TCP/UDP, 30303 TCP/UDP)
• Added process identification for detected ports
• Separate protocol (TCP/UDP) checks for better accuracy
• More detailed port status reporting

Summary addition

• Added warning count to the summary

Testing

The changes have been tested with:

• Prysm and Geth
• Needs testing with more different client combinations

Impact

These improvements provide:

• More accurate service detection
• Better visibility into node health
• Enhanced user experience