nvim: move to lazy package manager

.config/nvim/lua/plugins/ufo.lua

@@ -0,0 +1,18 @@
+return {
+  'kevinhwang91/nvim-ufo',
+  dependencies = {
+    'kevinhwang91/promise-async',
+  },
+  config = function()
+    vim.wo.foldcolumn = '1'
+    vim.wo.foldlevel = 99 -- feel free to decrease the value
+    vim.wo.foldenable = true
+
+    -- tell the sever the capability of foldingRange
+    local capabilities = vim.lsp.protocol.make_client_capabilities()
+    capabilities.textDocument.foldingRange = {
+        dynamicRegistration = false,
+        lineFoldingOnly = true
+    }
+  end
+}