added captcha system that generates every 5 minutes

utils/captcha.go

@@ -0,0 +1,17 @@
+package utils
+
+import (
+	"math/rand"
+	"time"
+)
+
+func GenerateCaptchaValues() (int, int) {
+	return rand.Intn(100), rand.Intn(100)
+}
+
+func UpdateCaptcha(captcha *[2]int) {
+	for {
+		captcha[0], captcha[1] = GenerateCaptchaValues()
+		time.Sleep(5 * time.Minute)
+	}
+}