feat: add gen enum command

pkg/utils/fs.go

@@ -0,0 +1,23 @@
+package utils
+
+import (
+	"os"
+)
+
+func IsDir(dir string) bool {
+	f, err := os.Stat(dir)
+	if err != nil {
+		return false
+	}
+
+	return f.IsDir()
+}
+
+func IsFile(path string) bool {
+	f, err := os.Stat(path)
+	if err != nil {
+		return false
+	}
+
+	return f.Mode().IsRegular()
+}