add new plugins

lua/custom/plugins/nvim-ufo.lua

@@ -0,0 +1,36 @@
+return {
+  {
+    "kevinhwang91/nvim-ufo",
+    dependencies = { "kevinhwang91/promise-async" },
+    event = "BufEnter",
+    config = function()
+      -- Fold options
+      vim.o.fillchars = [[eob: ,fold: ,foldopen:,foldsep: ,foldclose:]]
+      vim.o.foldlevel = 99 -- Using ufo provider need a large value, feel free to decrease the value
+      vim.o.foldlevelstart = 99
+      vim.o.foldenable = true
+      require("ufo").setup()
+    end,
+    opts = {
+      preview = {
+        win_config = {
+          border = { "", "─", "", "", "", "─", "", "" },
+          winhighlight = "Normal:Folded",
+          winblend = 0,
+        },
+        mappings = {
+          scrollB = "<C-b>",
+          scrollF = "<C-f>",
+          scrollU = "<C-u>",
+          scrollD = "<C-d>",
+          jumpTop = "[",
+          jumpBot = "]",
+        },
+      },
+      provider_selector = function(_, filetype, buftype)
+        return (filetype == "" or buftype == "nofile") and "indent" -- only use indent until a file is opened
+          or { "treesitter", "indent" } -- if file opened, try to use treesitter if available
+      end,
+    },
+  },
+}