refactored label generator script and README

headFirst/flag/go.mod

@@ -0,0 +1,3 @@
+module main
+
+go 1.25.3

headFirst/flag/main.go

@@ -0,0 +1,15 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+)
+
+func main() {
+	var nFlag = flag.Int("n",1234,"this is test int flag")
+	var sFlag = flag.String("s","lolkek","this is test string flag")
+	flag.Parse()
+
+	fmt.Println(*nFlag)
+	fmt.Println(*sFlag)
+}