Oxygen Therapy Market By Product Type (Oxygen Source Equipment, Oxygen Delivery Devices, Accessories), By Application (Chronic Obstructive Pulmonary Disease (COPD), Asthma, Obstructive Sleep Apnea, Pneumonia, Cystic Fibrosis, Acute Respiratory Distress Syndrome (ARDS), COVID-19 & Other Respiratory Infections, Others), By Age Group (Pediatric, Adult, Geriatric), By End User (Hospitals, Home Healthcare Settings, Ambulatory Care Centers, Specialty Respiratory Clinics, Emergency Medical Services (EMS), Others), By Region and Companies — Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2026–2035