Move cli/cmd into cli/internal

cli/internal/cmd/version.go

@@ -0,0 +1,20 @@
+package cmd
+
+import (
+	"github.com/edgelesssys/constellation/internal/constants"
+	"github.com/spf13/cobra"
+)
+
+// NewVerifyCmd returns a new cobra.Command for the verify command.
+func NewVersionCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "version",
+		Short: "Display version of this CLI",
+		Long:  "Display version of this CLI.",
+		Args:  cobra.NoArgs,
+		Run: func(cmd *cobra.Command, args []string) {
+			cmd.Printf("CLI Version: v%s \n", constants.CliVersion)
+		},
+	}
+	return cmd
+}