Utils: Add PhoneNrTypes

Elwig/Helpers/Utils.cs

@@ -48,6 +48,16 @@ namespace Elwig.Helpers {
         [GeneratedRegex(@"^(.*?) +([0-9].*)$", RegexOptions.Compiled)]
         private static partial Regex GeneratedAddressRegex();
 
+        public static readonly KeyValuePair<string, string>[] PhoneNrTypes = [
+            new("landline", "Tel.-Nr. (Festnetz)"),
+            new("mobile", "Tel.-Nr. (mobil)"),
+            new("fax", "Fax-Nr."),
+        ];
+
+        public static string PhoneNrTypeToString(string type) {
+            return PhoneNrTypes.Where(t => t.Key == type).Select(t => t.Value).FirstOrDefault(type);
+        }
+
         private static readonly ushort[] Crc16ModbusTable = {
             0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241,
             0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440,