Fix shader (#219)

Author: Nilirad

src/render/shape_material.wgsl

@@ -0,0 +1,15 @@
+#import bevy_sprite::mesh2d_types  Mesh2d
+#import bevy_sprite::mesh2d_view_bindings
+#import bevy_sprite::mesh2d_vertex_output  MeshVertexOutput
+
+@group(1) @binding(1)
+var texture: texture_2d<f32>;
+@group(1) @binding(2)
+var texture_sampler: sampler;
+@group(2) @binding(0)
+var<uniform> mesh: Mesh2d;
+
+@fragment
+fn fragment(in: MeshVertexOutput) -> @location(0) vec4<f32> {
+    return in.color;
+}