added existing nvim config

vim/.config/nvim/lua/plugins/rust-config.lua

@@ -0,0 +1,30 @@
+local bufnr = vim.api.nvim_get_current_buf()
+vim.keymap.set(
+  "n",
+  "<leader>a",
+  function()
+    vim.cmd.RustLsp('codeAction') -- supports rust-analyzer's grouping
+    -- or vim.lsp.buf.codeAction() if you don't want grouping.
+  end,
+  { silent = true, buffer = bufnr }
+)
+vim.keymap.set(
+  "n",
+  "K",  -- Override Neovim's built-in hover keymap with rustaceanvim's hover actions
+  function()
+    vim.cmd.RustLsp({'hover', 'actions'})
+  end,
+  { silent = true, buffer = bufnr }
+)
+
+vim.g.rustaceanvim = {
+  server = {
+    settings = {
+      ["rust-analyzer"] = {
+        checkOnSave = {
+          command = "clippy",
+        },
+      },
+    },
+  },
+}