winapi: Implement Suspend/Resume Thread

[Ryzee119]

Needed these, realised we had no winapi wrapper. Tested on xemu and hw with the below code:

#include <hal/debug.h>
#include <hal/video.h>
#include <windows.h>
#include <assert.h>

DWORD WINAPI ThreadProc(LPVOID lpParameter)
{
    while (1)
    {
        debugPrint("Worker thread is running...\n");
        Sleep(250);
    }
    return 0;
}

int main(void)
{
    XVideoSetMode(640, 480, 32, REFRESH_DEFAULT);

    HANDLE hThread = CreateThread(NULL, 0, ThreadProc, NULL, 0, NULL);

    // Let thread work for a while
    Sleep(1000);

    // Suspend the thread 3 times to test count
    SuspendThread(hThread);
    SuspendThread(hThread);
    DWORD dwPreviousCount = SuspendThread(hThread);

    // If the function succeeds, the return value is the thread's previous suspend count
    assert(dwPreviousCount == 2);

    // Ensure thread is suspended
    debugPrint("Thread is suspended\n");
    Sleep(1000);

    DWORD dwResumeCount = ResumeThread(hThread);

    // If the function succeeds, the return value is the thread's previous suspend count.
    // We suspend the thread 3 times, so we need to resume 3 times
    assert(dwResumeCount == 3);
    ResumeThread(hThread);

    // Ensure thread still isn't resumed yet
    Sleep(1000);

    // Okay, this should actually resume the thread
    ResumeThread(hThread);
    debugPrint("Thread is resumed\n");

    // Let thread work for a while
    Sleep(3000);

    return 0;
}