Global Portable Solar Charger Market Size, Share Demand Report By Product Type (Foldable Solar Chargers, Solar Backpacks, Solar-integrated Wearables, Compact Plug-in Panels), By Power Output (Below 5W, 5W–15W, 20W–40W, Above 40W), By Application (Consumer Electronics, Emergency & Disaster Response, Remote Infrastructure Kits, Outdoor & Camping), By Distribution Channel (Online Retail, Specialty Outdoor Stores, Department Stores, Government & NGO Supply Channels), By Region & Segment Forecasts, 2025–2030