Add FeeSats to withdrawal and channel operation requests

src/Data/Models/ChannelOperationRequest.cs

@@ -101,6 +101,11 @@ public decimal Amount
         /// </summary>
         public string? TxId { get; set; }
 
+        /// <summary>
+        /// Mining fee paid in satoshis, computed from the finalised PSBT once the funding tx is confirmed
+        /// </summary>
+        public long? FeeSats { get; set; }
+
         /// <summary>
         /// Text filled by the user upon request cancellation/rejection
         /// </summary>

src/Data/Models/WalletWithdrawalRequest.cs

@@ -113,6 +113,11 @@
         /// </summary>
         public string? TxId { get; set; }
 
+        /// <summary>
+        /// Mining fee paid in satoshis, computed from the finalised PSBT once the tx is confirmed
+        /// </summary>
+        public long? FeeSats { get; set; }
+
         /// <summary>
         /// For additional info required by the requestor
         /// </summary>
@@ -192,7 +197,7 @@
         public ApplicationUser UserRequestor { get; set; }
         public int WalletId { get; set; }
 
         public Wallet Wallet { get; set; }
 
         public int? BumpingWalletWithdrawalRequestId { get; set; }