Migrate plugins from Plug to packer

.config/nvim/lua/utils.lua

@@ -0,0 +1,13 @@
+local M = {}
+
+function M.is_buffer_empty()
+  -- Check whether the current buffer is empty
+  return vim.fn.empty(vim.fn.expand('%:t')) == 1
+end
+
+function M.has_width_gt(cols)
+  -- Check if the windows width is greater than a given number of columns
+  return vim.fn.winwidth(0) / 2 > cols
+end
+
+return M