Global Medical Spa Market Size, Share, Demand Report By Service Type (Facial Treatments, Body Shaping & Contouring, Hair Removal & Scar Reduction, Medical Dermatology & Therapeutic Treatments, Wellness & Preventive Medical Services, Cosmetic Adjunct & Beauty Services, Consultation & Diagnostics), By End-Use (Adults, Teenagers, Older Adults, Corporate Wellness Programs, Medical Tourism), By Gender (Male, Female), By Region & Segment Forecasts, 2025–2030