[LSP] Finish rust_analyzer setup

nvim/lua/plugins/lsp/lspconfig.lua

@@ -49,14 +49,16 @@ return {
         -- ┌                                               ┐
         -- │                     Rust                      │
         -- └                                               ┘
-        vim.lsp.config("rust_analyzer", {
+        lspconfig.rust_analyzer.setup({
             settings = {
                 ["rust-analyzer"] = {
                     diagnostics = {
-                        enable = false,
+                        enable = true,
                     },
                 },
             },
+            capabilities = capabilities,
+            on_attach = on_attach,
         })
 
         -- ┌                                               ┐