simplify commands and version handling

ocis-pkg/clihelper/app.go

@@ -0,0 +1,26 @@
+package clihelper
+
+import (
+	"github.com/owncloud/ocis/ocis-pkg/version"
+	"github.com/urfave/cli/v2"
+)
+
+func DefaultApp(app *cli.App) *cli.App {
+	// version info
+	app.Version = version.String
+	app.Compiled = version.Compiled()
+
+	// author info
+	app.Authors = []*cli.Author{
+		{
+			Name:  "ownCloud GmbH",
+			Email: "support@owncloud.com",
+		},
+	}
+
+	// disable global version flag
+	// instead we provide the version command
+	app.HideVersion = true
+
+	return app
+}