Global Peptide Therapeutics Market Size, Share, Growth & Industry Analysis By Drug Type (Metabolic Peptides, Insulin & Insulin-Analog Peptides, Oncology & Endocrine-Regulatory Peptides, Anti-Infective & Acute-Care Peptides, Gastrointestinal & Rare-Disease Peptides), By Route of Administration (Injectable, Oral, Intranasal & Transdermal, Others), By Therapeutic Area (Metabolic Disorders, Oncology, Endocrine, Gastrointestinal, Infectious Diseases), By Distribution Channel (Hospital, Retail, Specialty Pharmacies) Industry Trends & Forecast 2026–2034