feat: added Font Fetching and Extraction from target website

[Proxyy587]

Added

Font extraction:

Detects fonts from stylesheets, inline @font-face, and font-family in CSS
Resolves font file URLs against the stylesheet URL for correct paths

Font UI :

Preview line in the actual font
"Available on" badge (Google Fonts / Fontshare)
Download font button linking to the source URL or Google Fonts

Changed

API & types: BrandExtractionResult includes fonts: FontAsset[]. FontAsset is { family: string; url?: string; sourceUrl?: string }.
Empty extraction now requires at least one of: logos, colors, backdrops, or fonts.
Scraper logic preserves the font entry with sourceUrl when priorities are equal.

Preview

Thanks to @CyberWasDreaming0 for helping with the font fetching feature.

[ethanjyx]

thanks for adding this, the screenshot shows a few cards showing different fonts, I can imagine if the list is larger it will take more vertical space, hence I'm a bit unsure about this. We may need a better way to display all the results.

[CyberWasDreaming0]

thanks for adding this, the screenshot shows a few cards showing different fonts, I can imagine if the list is larger it will take more vertical space, hence I'm a bit unsure about this. We may need a better way to display all the results.

The whole list is not displayed at once. Initially, only the top 3 fonts are shown, and the remaining fonts are revealed when the user clicks on "Show more".