Global Youth Hostel Market Size, Share & Demand Report By Accommodation Type (Dormitory-Based Hostels, Private Room Hostels, Hybrid Lifestyle Hostels), By Traveler Demographics (International Backpackers, Domestic Budget Travelers, Students & Educational Groups, Digital Nomads & Extended-Stay Travelers), By Booking Channel & Price Tier, By Region & Segment Forecasts, 2025–2030