Function load_font_family_with_variants 

pub fn load_font_family_with_variants(
    name: &str,
    custom_paths: &[PathBuf],
) -> Result<FontFamily<FontData>, Error>

Loads a font family with proper variant files (Bold, Italic, BoldItalic).

This function searches for actual variant font files instead of reusing the regular font for all styles. Falls back to regular font if variants aren’t found.

Arguments

• name - The font family base name
• custom_paths - Directories to search for font files

Returns

A FontFamily with actual variant files loaded