Biogas Market Size, Share & Industry Analysis, By Feedstock (Organic Residue and Waste {Biowaste, Municipal, Sewage, Agriculture Waste, and Others} and Energy Crops), By Production Method (Biodigester, Wastewater Digester, Landfill Gas Recovery, and Others), By Application (Electricity Generation, Heating, Combine Heat and Power (CHP), and Others), and Regional Forecast, 2026-2034