Drug Reference Apps Market Size, Share & Industry Analysis, By Product Type (Comprehensive Professional Apps, Formulary Apps, and Consumer Drug Information Apps), By Delivery Mode (Mobile-only, Web-only, and Integrated/EHR-embedded Solutions), By Business Model (Individual Subscription, Institutional Licensing, and Advertising & Sponsored Access), By Function (Drug Monographs, Medication Safety & Interaction Screening, and Drug Identification & Verification), By End User (Hospitals & Health Systems, Pharmacies & Pharmacists, and Patients & Caregivers), and Regional Forecast, 2026-2034