Added slang shaders for ssao sample

shaders/slang/ssao/blur.slang

@@ -0,0 +1,30 @@
+/* Copyright (c) 2025, Sascha Willems
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+import types;
+
+Sampler2D samplerSSAO;
+
+[shader("fragment")]
+float4 fragmentMain(VSOutput input)
+{
+	const int blurRange = 2;
+	int n = 0;
+    int2 texDim;
+    samplerSSAO.GetDimensions(texDim.x, texDim.y);
+	float2 texelSize = 1.0 / (float2)texDim;
+	float result = 0.0;
+	for (int x = -blurRange; x <= blurRange; x++)
+	{
+		for (int y = -blurRange; y <= blurRange; y++)
+		{
+            float2 offset = float2(float(x), float(y)) * texelSize;
+            result += samplerSSAO.Sample(input.UV + offset).r;
+			n++;
+		}
+	}
+	return result / (float(n));
+}