Global Bike Roller Trainers Market Size, Share, and Demand Report By Product Type (Manual Roller Trainers, Smart/Interactive Roller Trainers, Magnetic Resistance Rollers, Fluid Resistance Rollers, Hybrid Resistance Rollers), By Application (Professional Cycling Training, Fitness and Recreation, Sports Academies & Coaching Centers, Rehabilitation & Physiotherapy), By Distribution Channel (Online Retail, Offline Retail, Direct Sales), By End-User (Individual Cyclists, Sports Clubs, Gyms, Rehabilitation Centers), By Region & Segment Forecasts, 2025–2030