Fix CryptoBase.SpeedTest compilation after System.CommandLine v2 upgrade

[Copilot]

Problem

After upgrading the System.CommandLine package to version 2.0.0-rc.1.25451.107, the CryptoBase.SpeedTest project failed to compile with 9 errors. The v2 API introduced several breaking changes that required updates to the command-line argument and option configuration code.

Changes

Updated Program.cs to use the new System.CommandLine v2 API:

1. Argument and Option Constructors

Before:

Argument<string> methodsArgument = new(@"method(s)", () => CryptoList.All, @"Methods separated by commas.");
Option<double> secondsOption = new(@"--seconds", () => 3.0, @"Run benchmarks for num seconds.");

After:

Argument<string> methodsArgument = new(@"method(s)")
{
    Description = @"Methods separated by commas.",
    DefaultValueFactory = _ => CryptoList.All
};
Option<double> secondsOption = new(@"--seconds", [@"-s"])
{
    Description = @"Run benchmarks for num seconds.",
    DefaultValueFactory = _ => 3.0
};

2. Completions

Before:

methodsArgument.AddCompletions(CryptoList.All);
methodsArgument.AddCompletions(method);

After:

methodsArgument.CompletionSources.Add(new[] { CryptoList.All });
methodsArgument.CompletionSources.Add(CryptoList.Methods.ToArray());

3. Command Configuration

Before:

RootCommand cmd = [methodsArgument, secondsOption, bytesOption];

After:

RootCommand cmd = new(@"CryptoBase Speed Test");
cmd.Add(methodsArgument);
cmd.Add(secondsOption);
cmd.Add(bytesOption);

4. Action Handler and Invocation

Before:

cmd.SetHandler((methods, seconds, bytes) => { /* ... */ }, methodsArgument, secondsOption, bytesOption);
return cmd.Invoke(args);

After:

cmd.SetAction((parseResult) =>
{
    string methods = parseResult.GetValue(methodsArgument)!;
    double seconds = parseResult.GetValue(secondsOption);
    int bytes = parseResult.GetValue(bytesOption);
    /* ... */
});
return cmd.Parse(args).Invoke();

Verification

• ✅ Solution builds successfully with no compilation errors
• ✅ All 286 unit tests pass
• ✅ Command-line help displays correctly with all completions
• ✅ Individual crypto methods work: dotnet run -- aes-128-ctr --seconds 1
• ✅ Multiple methods work: dotnet run -- aes-128-ctr,rc4 --seconds 1
• ✅ "all" option works: dotnet run -- all --seconds 1
• ✅ Command-line options function correctly: --seconds, --bytes, -s, -b

The changes maintain full backward compatibility with the existing command-line interface while adapting to the new System.CommandLine v2 API.

Original prompt

包升级后 CryptoBase.SpeedTest 编译应该会报错，修正错误

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