added mesh rendering

funnyassets/gfx_shaders/mesh_shared.slang

@@ -0,0 +1,15 @@
+#pragma once
+
+struct VertexOutput
+{
+	float4 position: SV_Position;
+	float2 uv: TEXCOORD0;
+};
+
+struct PushConstants
+{
+	float4x4 modelMatrix;
+	uint albedoID;
+	uint roughnessID;
+	uint metalnessID;
+};