feat(nvim): enable rust lsp support

nvim/lua/plugins/lspconfig.lua

@@ -27,7 +27,7 @@ local on_attach = function(client, bufnr)
             group = augroup,
             buffer = bufnr,
             callback = function()
-                vim.lsp.buf.formatting_sync()
+                vim.lsp.buf.formatting_sync({}, 3000)
             end,
         })
     end
@@ -63,10 +63,28 @@ local servers = {
 
 local lspconfig = require("lspconfig")
 
-for lsp, config in pairs(servers) do
+for lsp, settings in pairs(servers) do
     lspconfig[lsp].setup({
-        settings = config or {},
+        settings = settings,
         on_attach = on_attach,
         capabilities = capabilities,
     })
 end
+
+require("rust-tools").setup({
+    server = {
+        on_attach = on_attach,
+        settings = {
+            ["rust-analyzer"] = {
+                cargo = {
+                    loadOutDirsFromCheck = true,
+                },
+                checkOnSave = { command = "clippy" },
+                procMacro = {
+                    enable = true,
+                },
+            },
+        },
+        capabilities = capabilities,
+    },
+})