Add support for fetching transaction logs from Deribit API

Implemented `GetTransactionLogAsync` and `GetAllTransactionLogsAsync` methods to retrieve transaction logs with pagination support. Added related `TransactionLogResult` and `TransactionLogEntry` classes to handle the API response structure. This enhancement allows for detailed transaction tracking and log retrieval.

Author: prodigy

src/Prodigy.Solutions.Deribit.Client/AccountManagement/DeribitAccountManagementClient.cs

@@ -39,6 +39,33 @@ public Task<AccountSummaryResponse> GetAccountSummaryAsync(string currency, int?
 
         return _deribitClient.InvokeAsync<IReadOnlyCollection<PositionResult>>("private/get_positions", requestObject);
     }
+
+    public Task<TransactionLogResult> GetTransactionLogAsync(CurrencyKind currency, DateTimeOffset startDate,
+        DateTimeOffset endDate, string? query = null, int count = 100, int? continuation = null)
+    {
+        dynamic requestObject = new ExpandoObject();
+        requestObject.currency = currency;
+        requestObject.start_timestamp = startDate.ToUnixTimeMilliseconds();
+        requestObject.end_timestamp = endDate.ToUnixTimeMilliseconds();
+        if (query != null) requestObject.query = query;
+        requestObject.count = count;
+        if (continuation.HasValue) requestObject.continuation = continuation.Value;
+        
+        return _deribitClient.InvokeAsync<TransactionLogResult>("private/get_transaction_log", requestObject);
+    }
+
+    public async IAsyncEnumerable<TransactionLogEntry> GetAllTransactionLogsAsync(CurrencyKind currency,
+        DateTimeOffset startDate, DateTimeOffset endDate, string? query = null, int countPerPage = 100)
+    {
+        int? continuation = null;
+        do
+        {
+            var result = await GetTransactionLogAsync(currency, startDate, endDate, query, countPerPage, continuation);
+            continuation = result.Continuation;
+            foreach (var log in result.Logs ?? Array.Empty<TransactionLogEntry>())
+                yield return log;
+        } while (continuation != null);
+    }
 }
 
 public class PositionResult
@@ -99,4 +126,43 @@ public enum PositionDirection
     Zero,
     Buy,
     Sell
-}
+}
+
+public class TransactionLogResult
+{
+    public int? Continuation { get; set; }
+    public IReadOnlyCollection<TransactionLogEntry>? Logs { get; set; }
+}
+
+public class TransactionLogEntry
+{
+    public decimal Amount { get; set; }
+    public decimal Balance { get; set; }
+    public decimal Cashflow { get; set; }
+    public decimal Change { get; set; }
+    public decimal? Commission { get; set; }
+    public decimal? Contracts { get; set; }
+    public required string Currency { get; set; }
+    public decimal Equity { get; set; }
+    public long Id { get; set; }
+    public object? Info { get; set; }
+    public string? InstrumentName { get; set; }
+    public decimal InterestPl { get; set; }
+    public decimal MarkPrice { get; set; }
+    public string? OrderId { get; set; }
+    public decimal? Position { get; set; }
+    public decimal? Price { get; set; }
+    public string? PriceCurrency { get; set; }
+    public bool ProfitAsCashflow { get; set; }
+    public decimal SessionRpl { get; set; }
+    public decimal SessionUpl { get; set; }
+    public string? Side { get; set; }
+    public long Timestamp { get; set; }
+    public decimal TotalInterestPl { get; set; }
+    public string? TradeId { get; set; }
+    public required string Type { get; set; }
+    public long UserId { get; set; }
+    public string? UserRole { get; set; }
+    public long UserSeq { get; set; }
+    public required string Username { get; set; }
+}

src/Prodigy.Solutions.Deribit.Client/Prodigy.Solutions.Deribit.Client.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>