Added user password validation, Fixed new user localization issue

src/wwwroot/js/site.js

@@ -187,4 +187,11 @@ async function loadUsersIntoSelect(selectElement, selectedValue = null) {
         console.error('Error loading users:', err);
         showToast(appTranslations.errorLoadingUsers, 'danger');
     }
+}
+
+function validatePassword(password) {
+    // Regex: min 8 chars, one uppercase, one lowercase, one number, one special char
+    const strongPasswordRegex =
+        /^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[!@#$%^&*()_\-+=\[{\]};:'",<.>/?\\|`~]).{8,}$/;
+    return strongPasswordRegex.test(password);
 }