Merge pull request #6 from anmolksachan/anmolksachan-patch-1

Version 3.0 Updates

Added NVD API key support for authenticated requests
New CLI options: --cpe, --cve, --poc, --more for granular control
Integrated CVE PoC lookup from GitHub
Enhanced Marc Full Disclosure exploit search
Configurable API key storage (~/.cve_finder.cfg)
Improved retry logic with rate-limit handling
Direct CVE/CPE lookup modes added
Modularized code structure for maintainability
Colored output formatting for readability
Added exploit status checks via PyExploitDb
Better error handling and user feedback

Author: anmolksachan