introduction of nuget packages as plugins support

Torch.API/WebAPI/Plugins/NLogLogger.cs

@@ -0,0 +1,87 @@
+#nullable enable
+using System;
+using System.Threading.Tasks;
+using NuGet.Common;
+
+namespace Torch.API.WebAPI.Plugins;
+
+internal class NLogLogger : ILogger
+{
+    private readonly NLog.ILogger _logger;
+
+    public NLogLogger(NLog.ILogger logger)
+    {
+        _logger = logger;
+    }
+
+    public void LogDebug(string data)
+    {
+        _logger.Debug(data);
+    }
+
+    public void LogVerbose(string data)
+    {
+        _logger.Trace(data);
+    }
+
+    public void LogInformation(string data)
+    {
+        _logger.Info(data);
+    }
+
+    public void LogMinimal(string data)
+    {
+        _logger.Debug(data);
+    }
+
+    public void LogWarning(string data)
+    {
+        _logger.Warn(data);
+    }
+
+    public void LogError(string data)
+    {
+        _logger.Error(data);
+    }
+
+    public void LogInformationSummary(string data)
+    {
+        _logger.Info(data);
+    }
+
+    public void Log(LogLevel level, string data)
+    {
+        _logger.Log(ToNLogLevel(level), data);
+    }
+
+    private static NLog.LogLevel ToNLogLevel(LogLevel level)
+    {
+        return level switch
+        {
+            LogLevel.Debug => NLog.LogLevel.Debug,
+            LogLevel.Verbose => NLog.LogLevel.Trace,
+            LogLevel.Information => NLog.LogLevel.Info,
+            LogLevel.Minimal => NLog.LogLevel.Debug,
+            LogLevel.Warning => NLog.LogLevel.Warn,
+            LogLevel.Error => NLog.LogLevel.Error,
+            _ => throw new ArgumentOutOfRangeException(nameof(level), level, null)
+        };
+    }
+
+    public Task LogAsync(LogLevel level, string data)
+    {
+        Log(level, data);
+        return Task.CompletedTask;
+    }
+
+    public void Log(ILogMessage message)
+    {
+        _logger.Log(ToNLogLevel(message.Level), message.FormatWithCode);
+    }
+
+    public Task LogAsync(ILogMessage message)
+    {
+        Log(message);
+        return Task.CompletedTask;
+    }
+}