Add initial prototype (#1)

* Add survey library to select server

* Add speedtest

* Add --random flag to connect

* Add list command

* Cache server list

* Tail the openvpn logs so that it appears in vpngate logs

* Add goreleaser action

* Add golangci-lint action

cmd/root.go

@@ -0,0 +1,26 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+var rootCmd = &cobra.Command{
+	Use:   "vpngate",
+	Short: "vpngate is a client for vpngate.net",
+	Run: func(cmd *cobra.Command, args []string) {
+		if len(args) == 0 {
+			_ = cmd.Help()
+			os.Exit(0)
+		}
+	},
+}
+
+func Execute() {
+	if err := rootCmd.Execute(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}