cmd/mbf: jstest: add basic CLI reporter

cmd/mbf/internal/pkgserver/ui/test_ui.go

@@ -0,0 +1,11 @@
+//go:build frontend && frontend_test
+
+package ui
+
+import "embed"
+
+//go:generate tsc -p tsconfig.test.json
+//go:generate cp index.html style.css favicon.ico static
+//go:embed static
+var _static embed.FS
+var static = staticFS(_static)