rust auto format on save

lua/custom/plugins/rust.lua

@@ -2,4 +2,12 @@
 --  I promise not to create any merge conflicts in this directory :)
 --
 -- See the kickstart.nvim README for more information
-return {}
+return {
+  {
+    "rust-lang/rust.vim",
+    ft = "rust",
+    init = function ()
+      vim.g.rustfmt_autosave = 1
+    end
+  },
+}