Add shaders re-implemented in HLSL

These were written against the shaders at revision eddd724e7.
There have been changes made since then, which will need to be mirrored.

See `data/hlsl/README.md` for the current status of each sample.

data/hlsl/dynamicuniformbuffer/base.vert

@@ -0,0 +1,36 @@
+// Copyright 2020 Google LLC
+
+struct VSInput
+{
+[[vk::location(0)]] float3 Pos : POSITION0;
+[[vk::location(1)]] float3 Color : COLOR0;
+};
+
+struct UboView
+{
+	float4x4 projection;
+	float4x4 view;
+};
+cbuffer uboView : register(b0) { UboView uboView; };
+
+struct UboInstance
+{
+	float4x4 model;
+};
+cbuffer uboInstance : register(b1) { UboInstance uboInstance; };
+
+struct VSOutput
+{
+	float4 Pos : SV_POSITION;
+[[vk::location(0)]] float3 Color : COLOR0;
+};
+
+VSOutput main(VSInput input)
+{
+	VSOutput output = (VSOutput)0;
+	output.Color = input.Color;
+	float4x4 modelView = mul(uboView.view, uboInstance.model);
+	float3 worldPos = mul(modelView, float4(input.Pos, 1.0)).xyz;
+	output.Pos = mul(uboView.projection, mul(modelView, float4(input.Pos.xyz, 1.0)));
+	return output;
+}