Added the command to download latest release with a path.

test/Velopack.CommandLine.Tests/Commands/PathDownloadCommandTests.cs

@@ -0,0 +1,32 @@
+using System.CommandLine;
+using Velopack.Vpk.Commands;
+
+namespace Velopack.CommandLine.Tests.Commands;
+public class PathDownloadCommandTests : BaseCommandTests<PathDownloadCommand>
+{
+    [Fact]
+    public void Path_WithPath_ParsesValue()
+    {
+        var command = new PathDownloadCommand();
+
+        DirectoryInfo directory = Directory.CreateDirectory(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "releases"));
+        ParseResult parseResult = command.ParseAndApply($"--path {directory.FullName}");
+
+        Assert.Empty(parseResult.Errors);
+        Assert.Equal(directory.FullName, command.Path.FullName);
+
+        Directory.Delete(directory.FullName);
+    }
+
+    [Fact]
+    public void Path_WithNonExistingDirectory_ShowsError()
+    {
+        var command = new PathDownloadCommand();
+
+        // Parse with a fake path
+        ParseResult parseResult = command.ParseAndApply($"--path \"E:\releases\"");
+
+        Assert.Equal(1, parseResult.Errors.Count);
+        Assert.StartsWith("--path directory is not found, but must exist", parseResult.Errors[0].Message);
+    }
+}