Replace NEKit dependency with reduced subset

GlassVPN/zhuhaow-NEKit/Socket/AdapterSocket/Factory/ServerAdapterFactory.swift

@@ -0,0 +1,12 @@
+import Foundation
+
+/// Factory building adapter with proxy server host and port.
+open class ServerAdapterFactory: AdapterFactory {
+    let serverHost: String
+    let serverPort: Int
+
+    public init(serverHost: String, serverPort: Int) {
+        self.serverHost = serverHost
+        self.serverPort = serverPort
+    }
+}