Update IFingerprintManager

Akari.Prototype.Server/Services/IFingerprintManager.cs

@@ -6,11 +6,12 @@ using System.Threading.Tasks;
 
 namespace Akari.Prototype.Server.Services
 {
-    public interface IFingerprintManager
+    public interface IFingerprintManager : IEnumerable<KeyValuePair<string, string>>
     {
-        IEnumerable<KeyValuePair<string, string>> FingerprintsHash { get; }
-
+        bool Add(string name, string hash);
+        bool Contains(string name);
         bool Remove(string name);
+        void Set(string name, string hash);
 
         void VerifyFingerprint(string name, string token);
     }