adding software computer base

Sources/Backends/Software/SoftFence.c

@@ -0,0 +1,24 @@
+// Copyright (C) 2025 kanel
+// This file is part of "Pulse"
+// For conditions of distribution and use, see copyright notice in LICENSE
+
+#include <Pulse.h>
+#include "../../PulseInternal.h"
+#include "Soft.h"
+#include "SoftFence.h"
+
+PulseFence SoftCreateFence(PulseDevice device)
+{
+}
+
+void SoftDestroyFence(PulseDevice device, PulseFence fence)
+{
+}
+
+bool SoftIsFenceReady(PulseDevice device, PulseFence fence)
+{
+}
+
+bool SoftWaitForFences(PulseDevice device, const PulseFence* fences, uint32_t fences_count, bool wait_for_all)
+{
+}