moved renderer to separate thread, add evenio and start structure, make it so you can add stuff

src/client/render/voxel_poly/vertex.rs

@@ -0,0 +1,6 @@
+#[repr(C)]
+#[derive(Copy, Clone, Debug)]
+struct Vertex {
+    position: [f32; 3],
+    color: [f32; 3],
+}