Using MSVCRT instead of UCRT for Windows build

Previous Windows builds were exclusively supportive of Windows 10 and newer systems, necessitating manual installation of UCRT for normal functionality on older systems. https://www.microsoft.com/en-us/download/details.aspx?id=48234 This PR transitions the default Windows build from UCRT to MSVCRT to support more systems, while simultaneously shifting the PCAP dependency from libpcap to wpcap within npcap, to minimize the application size.