Refactor shaders

src_assets/windows/assets/shaders/directx/cursor_vs.hlsl

@@ -0,0 +1,10 @@
+cbuffer rotate_texture_steps_cbuffer : register(b2) {
+    int rotate_texture_steps;
+};
+
+#include "include/base_vs.hlsl"
+
+vertex_t main_vs(uint vertex_id : SV_VertexID)
+{
+    return generate_fullscreen_triangle_vertex(vertex_id, rotate_texture_steps);
+}