feat(password) EE-2690 enforce strong password policy (#6751)

* feat(password) EE-2690 enforce strong password policy

* feat(password) EE-2690 disable create user button if password is not valid

* feat(password) EE-2690 show force password change warning only when week password is detected

* feat(password) EE-2690 prevent users leave account page by clicking add access token button

Co-authored-by: Simon Meng <simon.meng@portainer.io>

api/internal/passwordutils/strengthCheck.go

@@ -0,0 +1,33 @@
+package passwordutils
+
+import (
+	"regexp"
+)
+
+const MinPasswordLen = 12
+
+func lengthCheck(password string) bool {
+	return len(password) >= MinPasswordLen
+}
+
+func comboCheck(password string) bool {
+	count := 0
+	regexps := [4]*regexp.Regexp{
+		regexp.MustCompile(`[a-z]`),
+		regexp.MustCompile(`[A-Z]`),
+		regexp.MustCompile(`[0-9]`),
+		regexp.MustCompile(`[\W_]`),
+	}
+
+	for _, re := range regexps {
+		if re.FindString(password) != "" {
+			count += 1
+		}
+	}
+
+	return count >= 3
+}
+
+func StrengthCheck(password string) bool {
+	return lengthCheck(password) && comboCheck(password)
+}