Update IFingerprintManager

Add FingerprintsHash to get registered fingerprints

Akari.Prototype.Server/Services/IFingerprintManager.cs

@@ -8,6 +8,8 @@ namespace Akari.Prototype.Server.Services
 {
     public interface IFingerprintManager
     {
+        IEnumerable<KeyValuePair<string, string>> FingerprintsHash { get; }
+
         void VerifyFingerprint(string name, string token);
     }
 }