IT Staffing Market Size, Share, Growth, and Industry Analysis, By Type (Temporary Staffing Service, Long-term Staffing Service, Contract-to-Hire Staffing Service), By Application (Aerospace and Defense, Automotive and Transportation, Energy, Electronics and Semiconductors, Software, Internet and Communications, Industrial Manufacturing, Life Science and Health, Financial Services, Public Sector and Infrastructure, Retail & Logistics, Others), Regional Insights and Forecast to 2035