Refine ProxiFyre's Configuration and Introduce Service Capabilities

• Integrated Topshelf to enable ProxiFyre to run as a Windows Service, while retaining its functionality as a standalone application with Control-C termination. Resolves: #12 (closed)
• Revamped configuration to support selective protocols (TCP, UDP, or both) for individual proxy instances. See: #11 (closed)
• Adopted NLog for enhanced logging, with output directed to /logs in the application directory. Addresses: #13 (closed)

This enhancement empowers users with versatile proxy management, seamless service operation, and streamlined log tracking.