Global Digital Therapeutics Platform Market Size, Share, Growth & Industry Analysis By Offering (Software/Standalone SaMD, Platform-as-a-Service/SaaS Infrastructure, Wearable-Integrated Therapeutics), By Application (Mental Health, Cardiometabolic, MSK Rehabilitation, Respiratory, Oncology Support), By Deployment Mode (B2B2C, Prescription DTx, Direct-to-Consumer), By End-User (Hospitals, Payers, Pharma, Employers) Industry Trends & Forecast 2026–2034