Residential Generators Market Size, Share & Industry Analysis, By Type (Stationary and Portable), By Fuel Type (Diesel, Gas, and Other), By Power Rating (Less Than 20 kVA, 20 kVA - 50 kVA, 50 kVA - 100 kVA and More Than 100 kVA), By Application (Continuous Load, Peak Load, and Standby Load), and Regional Forecast, 2026-2034