feat: enhance download page UI with improved layout and styling for the download cards.

[iam-sahil]

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Screenshots:

Major Changes

• Full background hero image for each game
• Game logo displayed prominently
• Card shine on hover effect like the profile and library page
• Visible progress bar under each game
• Big quick-action button on the right (Install / Pause / Resume)
• Live download speed always visible (e.g., 45 MB/s)
• Peak speed tracking and display (shows the fastest speed reached)
• ETA shown during download (e.g., “in 12 minutes”)
• Cleaner status text below progress bar (e.g., “2 hours remaining • 12 seeds, 45 peers”)
• Three small stat icons with labels (Network | Peak | Size on Disk)
• Dark overlay on background image for better text readability
• Supports existing themes
• Downloader badge moved next to logo/title

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud