add config

config/plugins/ui/bufferline.nix

@@ -0,0 +1,26 @@
+{
+  plugins = {
+    bufferline = {
+      enable = true;
+      settings = {
+        options = {
+          diagnostics = "nvim_lsp";
+          mode = "buffers";
+
+          close_icon = " ";
+          buffer_close_icon = "󰱝 ";
+          modified_icon = "󰔯 ";
+
+          offsets = [
+            {
+              filetype = "neo-tree";
+              text = "Neo-tree";
+              highlight = "Directory";
+              text_align = "left";
+            }
+          ];
+        };
+      };
+    };
+  };
+}