update oil configuration to vim pack

doc/smoketest.md

@@ -2,6 +2,12 @@
 
 A manual smoketest checklist to ensure features are working:
 
-## Plugins Load
+## Plugin
+
+### Custom
+- [ ] Oil
+    - Shortcut `<leader>-` should open Oil
+
+### Themes
 - [ ] Catppuccin Theme
 - [ ] Rose Pine Theme

lua/custom/plugins/oil.lua

@@ -1,7 +1,12 @@
-return {
-  'stevearc/oil.nvim',
-  config = function()
-    require('oil').setup()
-    vim.keymap.set('n', '-', '<CMD>Oil<CR>', { desc = 'Open parent directory' })
-  end,
+-- return {
+--   'stevearc/oil.nvim',
+--   config = function()
+--     require('oil').setup()
+--     vim.keymap.set('n', '-', '<CMD>Oil<CR>', { desc = 'Open parent directory' })
+--   end,
+-- }
+
+vim.pack.add { 'https://github.com/stevearc/oil.nvim' }
+require('oil').setup {
+  vim.keymap.set('n', '-', '<CMD>Oil<CR>', { desc = 'Open parent directory' }),
 }