Issue #10: implement worker process launcher

src/MxGateway.Server/Workers/SystemWorkerProcess.cs

@@ -0,0 +1,27 @@
+using System.Diagnostics;
+
+namespace MxGateway.Server.Workers;
+
+internal sealed class SystemWorkerProcess(Process process) : IWorkerProcess
+{
+    public int Id => process.Id;
+
+    public bool HasExited => process.HasExited;
+
+    public int? ExitCode => process.HasExited ? process.ExitCode : null;
+
+    public async ValueTask WaitForExitAsync(CancellationToken cancellationToken)
+    {
+        await process.WaitForExitAsync(cancellationToken).ConfigureAwait(false);
+    }
+
+    public void Kill(bool entireProcessTree)
+    {
+        process.Kill(entireProcessTree);
+    }
+
+    public void Dispose()
+    {
+        process.Dispose();
+    }
+}