➕ Added password validator

vendor/github.com/lane-c-wagner/go-password-validator/length.go

@@ -0,0 +1,20 @@
+package passwordvalidator
+
+func getLength(password string) int {
+	const maxNumSameChar = 2
+	chars := map[rune]int{}
+	for _, c := range password {
+		if _, ok := chars[c]; !ok {
+			chars[c] = 0
+		}
+		if chars[c] >= maxNumSameChar {
+			continue
+		}
+		chars[c]++
+	}
+	length := 0
+	for _, count := range chars {
+		length += count
+	}
+	return length
+}