Global Headwear Market Size, Share, Demand Report By Product Type (Caps & Hats, Beanies, Headbands & Wraps, Helmets & Protective Headwear, Traditional Headwear), By Material Type (Cotton, Polyester, Wool, Leather, Technical Fabrics), By End User (Men, Women, Kids, Unisex), By Application (Casual Fashion, Sports & Outdoor, Functional & Protective, Cultural), By Distribution Channel (Online, Offline, Wholesale), By Region & Segment Forecasts, 2025–2030