add lsp, update neo-tree config and add bufferline

config/plugins/lsp/conform.nix

@@ -0,0 +1,23 @@
+{
+  plugins.conform-nvim = {
+    enable = true;
+    formatOnSave = {
+      lspFallback = true;
+      timeoutMs = 500;
+    };
+    notifyOnError = true;
+    formattersByFt = {
+      liquidsoap = ["liquidsoap-prettier"];
+      html = [["prettierd" "prettier"]];
+      css = [["prettierd" "prettier"]];
+      javascript = [["prettierd" "prettier"]];
+      typescript = [["prettierd" "prettier"]];
+      python = ["black"];
+      lua = ["stylua"];
+      nix = ["alejandra"];
+      markdown = [["prettierd" "prettier"]];
+      yaml = ["yamllint" "yamlfmt"];
+      terraform = ["terraform-fmt"];
+    };
+  };
+}