Wi-Fi as a Service Market Size, Share & COVID-19 Impact Analysis, By Access Point (Standalone Access Point, Multifunction Access Point, and Controlled Access Point), By Location (Indoor and Outdoor), By Organization Size (Large Enterprises and Small & Medium Enterprises), By End-User (Banking, Financial Services and Insurance (BFSI), Retail, Manufacturing, Transportation, Education, Healthcare, and Others), and Regional Forecast, 2021-2028