Add some useful snippets
diff --git a/modules/neovim/coc/snippets/rust.snippets b/modules/neovim/coc/snippets/rust.snippets
new file mode 100644
index 0000000..faf683b
--- /dev/null
+++ b/modules/neovim/coc/snippets/rust.snippets
@@ -0,0 +1,6 @@
+snippet testasync "An async test using tokio" 
+#[tokio::test]
+async fn ${1:function_name}_test() {
+  ${0}
+}
+endsnippet