feat: add version command

cli/cli.go

@@ -29,6 +29,7 @@ func RunApp(version, commit string) {
 					},
 				},
 			},
+			VersionCommand,
 		},
 		Flags: []cli.Flag{
 			EnvFlag,

cli/version.go

@@ -0,0 +1,14 @@
+package cli
+
+import (
+	"github.com/urfave/cli/v2"
+)
+
+var VersionCommand = &cli.Command{
+	Name:  "version",
+	Usage: "Print the version",
+	Action: func(c *cli.Context) error {
+		cli.VersionPrinter(c)
+		return nil
+	},
+}