added oil to nvim config

lua/custom/plugins/init.lua

@@ -2,4 +2,18 @@
 --  I promise not to create any merge conflicts in this directory :)
 --
 -- See the kickstart.nvim README for more information
-return {}
+return {
+  {
+    'stevearc/oil.nvim',
+    opts = {},
+    dependencies = { { 'echasnovski/mini.icons', opts = {} } },
+    config = function()
+      require('oil').setup {
+        default_file_explorer = true,
+        view_options = {
+          show_hidden = true,
+        },
+      }
+    end,
+  },
+}