OpenID Connect support (#3975)

Co-authored-by: DieselTech <30128380+DieselTech@users.noreply.github.com>
Co-authored-by: majora2007 <josephmajora@gmail.com>

API/Extensions/StringExtensions.cs

@@ -52,4 +52,33 @@ public static class StringExtensions
     {
         return string.IsNullOrEmpty(value) ? defaultValue : double.Parse(value, CultureInfo.InvariantCulture);
     }
+
+    public static string TrimPrefix(this string? value, string prefix)
+    {
+        if (string.IsNullOrEmpty(value)) return string.Empty;
+
+        if (!value.StartsWith(prefix)) return value;
+
+        return value.Substring(prefix.Length);
+    }
+
+    /// <summary>
+    /// Censor the input string by removing all but the first and last char.
+    /// </summary>
+    /// <param name="input"></param>
+    /// <returns></returns>
+    /// <remarks>If the input is an email (contains @), the domain will remain untouched</remarks>
+    public static string Censor(this string? input)
+    {
+        if (string.IsNullOrWhiteSpace(input)) return input ?? string.Empty;
+
+        var atIdx = input.IndexOf('@');
+        if (atIdx == -1)
+        {
+            return $"{input[0]}{new string('*', input.Length - 1)}";
+        }
+
+        return input[0] + new string('*', atIdx - 1) + input[atIdx..];
+    }
+
 }