Global Intelligent Payment Routing Market Size, Share, Growth & Industry Analysis By Routing Intelligence Type (AI & Machine Learning Adaptive Routing, Rule-Based Routing, Cost-Optimized Routing, Real-Time Payment Rail Routing), By End-Use Vertical (Retail & E-Commerce, Travel & Hospitality, BFSI, SaaS, Marketplaces), By Deployment Model (API Orchestration, Embedded PSP, Merchant-Built Systems) Industry Trends & Forecast 2026–2034