Moved shaders to new directory

shaders/hlsl/textoverlay/text.frag

@@ -0,0 +1,10 @@
+// Copyright 2020 Google LLC
+
+Texture2D textureFont : register(t0);
+SamplerState samplerFont : register(s0);
+
+float4 main([[vk::location(0)]] float2 inUV : TEXCOORD0) : SV_TARGET
+{
+	float color = textureFont.Sample(samplerFont, inUV).r;
+	return color.xxxx;
+}