[GPU] Shaders to common, xb buildshaders instead of buildhlsl

src/xenia/gpu/shaders/tessellation_indexed.vs.hlsl

@@ -0,0 +1,15 @@
+#include "endian.hlsli"
+#include "xenos_draw.hlsli"
+
+XeHSControlPointInputIndexed main(uint xe_vertex_id : SV_VertexID) {
+  XeHSControlPointInputIndexed output;
+  // Only the lower 24 bits of the vertex index are used (tested on an Adreno
+  // 200 phone). `((index & 0xFFFFFF) + offset) & 0xFFFFFF` is the same as
+  // `(index + offset) & 0xFFFFFF`.
+  output.index =
+      float(clamp((XeEndianSwap32(xe_vertex_id, xe_vertex_index_endian) +
+                   xe_vertex_index_offset) &
+                  0xFFFFFFu,
+                  xe_vertex_index_min_max.x, xe_vertex_index_min_max.y));
+  return output;
+}