Add slang shaders for triangle samples

shaders/slang/triangle/triangle.frag.slang

@@ -0,0 +1,11 @@
+/* Copyright (c) 2025, Sascha Willems
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+[shader("fragment")]
+float4 main([[vk::location(0)]] float3 Color)
+{
+  return float4(Color, 1.0);
+}

shaders/slang/triangle/triangle.vert.slang

@@ -0,0 +1,35 @@
+/* Copyright (c) 2025, Sascha Willems
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+struct UBO
+{
+	float4x4 projectionMatrix;
+	float4x4 modelMatrix;
+	float4x4 viewMatrix;
+};
+[[vk::binding(0, 0)]]
+ConstantBuffer<UBO> ubo;
+
+struct VSInput
+{
+    [[vk::location(0)]] float3 Pos;
+    [[vk::location(1)]] float3 Color;
+};
+
+struct VSOutput
+{
+	float4 Pos : SV_POSITION;
+	[[vk::location(0)]] float3 Color;
+};
+
+[shader("vertex")]
+VSOutput main(VSInput input)
+{
+	VSOutput output;
+	output.Color = input.Color;
+	output.Pos = mul(ubo.projectionMatrix, mul(ubo.viewMatrix, mul(ubo.modelMatrix, float4(input.Pos.xyz, 1.0))));
+	return output;
+}