Add winstd::http

Signed-off-by: Simon Rozman <simon@rozman.si>

include/WinStd/Win.h

@@ -1,4 +1,4 @@
-/*
+/*
     SPDX-License-Identifier: MIT
     Copyright © 1991-2023 Amebis
     Copyright © 2016 GÉANT

include/WinStd/WinHTTP.h

@@ -0,0 +1,53 @@
+/*
+    SPDX-License-Identifier: MIT
+    Copyright © 1991-2023 Amebis
+    Copyright © 2016 GÉANT
+*/
+
+/// \defgroup WinStdWinHTTP Windows HTTP Client
+
+#pragma once
+
+#include "Common.h"
+#include <winhttp.h>
+
+namespace winstd
+{
+    /// \addtogroup WinStdWinHTTP
+    /// @{
+
+    ///
+    /// HTTP handle wrapper class
+    ///
+    /// \sa [WinHttpOpen function](https://learn.microsoft.com/en-us/windows/win32/api/winhttp/nf-winhttp-winhttpopen)
+    ///
+    class http : public handle<HINTERNET, NULL>
+    {
+        WINSTD_HANDLE_IMPL(http, NULL)
+
+    public:
+        ///
+        /// Closes a handle to the HTTP.
+        ///
+        /// \sa [WinHttpCloseHandle function](https://learn.microsoft.com/en-us/windows/win32/api/winhttp/nf-winhttp-winhttpclosehandle)
+        ///
+        virtual ~http()
+        {
+            if (m_h != invalid)
+                free_internal();
+        }
+
+    protected:
+        ///
+        /// Closes a handle to the HTTP.
+        ///
+        /// \sa [WinHttpCloseHandle function](https://learn.microsoft.com/en-us/windows/win32/api/winhttp/nf-winhttp-winhttpclosehandle)
+        ///
+        void free_internal() noexcept override
+        {
+            WinHttpCloseHandle(m_h);
+        }
+    };
+
+    /// @}
+}