feat(render): sample original TEXM in Vulkan

adapters/fparkan-render-vulkan/shaders/triangle.frag

@@ -1,8 +1,11 @@
 #version 450
 
 layout(location = 0) in vec3 in_color;
+layout(location = 1) in vec2 in_uv;
 layout(location = 0) out vec4 out_color;
 
+layout(set = 0, binding = 0) uniform sampler2D base_color;
+
 void main() {
-    out_color = vec4(in_color, 1.0);
+    out_color = texture(base_color, in_uv) * vec4(in_color, 1.0);
 }