[FEATURE] Add copy-to-clipboard buttons for scan results

[NovaCode37]

Add one-click copy buttons for key data points in scan results.

Currently users have to manually select and copy IPs, domains,
emails, DNS records etc. Add a small copy icon next to each value.

Scope:

• Copy button next to: IP addresses, domains, email addresses,
  DNS records, subdomains, Shodan ports, usernames found
• Toast notification "Copied!" on click
• Use navigator.clipboard API

Files: frontend/src/components/views/ScanResults.tsx

[TheFinalFrontier3]

Hello @NovaCode37, can you assign it to me pls?

[NovaCode37]

Hello @NovaCode37, can you assign it to me pls?

Hey, Sure. Assigned it to you