Updated nip47 notifs support

Author: Kukks

NNostr.Client/NNostr.Client.csproj

@@ -6,7 +6,7 @@
         <Nullable>enable</Nullable>
         <LangVersion>11</LangVersion>
         <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
-        <PackageVersion>0.0.50</PackageVersion>
+        <PackageVersion>0.0.51</PackageVersion>
         <Title>Nostr Client</Title>
         <Description>A client for Nostr</Description>
         <Copyright>MIT</Copyright>

NNostr.Client/Protocols/NIP47.cs

@@ -405,6 +405,9 @@ public class PayInvoiceRequest : INIP47Request
     public class PayInvoiceResponse
     {
         [JsonPropertyName("preimage")] public string Preimage { get; set; }
+        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+        [JsonPropertyName("fees_paid")]
+        public long? FeesPaid { get; set; }
     }
 
     public class MakeInvoiceRequest : INIP47Request
@@ -478,6 +481,8 @@ public class GetInfoResponse
         [JsonPropertyName("block_height")] public long BlockHeight { get; set; }
         [JsonPropertyName("block_hash")] public string BlockHash { get; set; }
         [JsonPropertyName("methods")] public string[] Methods { get; set; }
+        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)] 
+        [JsonPropertyName("notifications")] public string[]? Notifications { get; set; }
     }
 
     public class GetBalanceResponse