PROCESS_INFORMATION in CreateProcess should use SafeHandle

Actual behavior

The last argument of CreateProcess is an out PROCESS_INFORMATION with raw handles

struct PROCESS_INFORMATION
{
    internal winmdroot.Foundation.HANDLE hProcess;
    internal winmdroot.Foundation.HANDLE hThread;
    internal uint dwProcessId;
    internal uint dwThreadId;
}

Expected behavior

The promise of CsWin32 is to expose

struct PROCESS_INFORMATION
{
    internal SafeHandle hProcess;
    internal SafeHandle hThread;
    internal uint dwProcessId;
    internal uint dwThreadId;
}

Repro steps

1. NativeMethods.txt content:

CreateProcess

Context

• CsWin32 version: 0.2.162-beta
• Target Framework: netframework48

Start with the NativeMethods.txt repro containing CreateProcess and inspect the generated PROCESS_INFORMATION declaration. Compare its hProcess and hThread types with the expected SafeHandle-based declaration; done means the generated output exposes both handles as SafeHandle while retaining the process and thread IDs.