fix: move pathExists out of sys calls and do not mock it

Moved pathExists from SysCalls to path.h.
In ULTs, use unchanged pathExists and mock stat, getFileAttributesA instead.
Add Windows and Linux ULTs for pathExists.

Signed-off-by: Fabian Zwoliński <fabian.zwolinski@intel.com>

shared/source/helpers/windows/path.cpp

@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2024 Intel Corporation
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+#include "shared/source/helpers/path.h"
+
+#include "shared/source/os_interface/windows/sys_calls.h"
+
+#include <string>
+
+namespace NEO {
+bool pathExists(const std::string &path) {
+    DWORD ret = NEO::SysCalls::getFileAttributesA(path.c_str());
+
+    if (ret == INVALID_FILE_ATTRIBUTES) {
+        return false;
+    }
+
+    return (ret & FILE_ATTRIBUTE_DIRECTORY) != 0;
+}
+} // namespace NEO