perf: balance - lazy load atac (cmd) and marks (keys) for better startup

lua/custom/plugins/atac.lua

@@ -1,5 +1,6 @@
 return {
   'NachoNievaG/atac.nvim',
+  cmd = 'Atac',
   dependencies = { 'akinsho/toggleterm.nvim' },
   config = function()
     require('toggleterm').setup({
@@ -11,7 +12,7 @@ return {
       close_on_exit = true,
     })
     require('atac').setup({
-      dir = '~/Documents/projects/', -- By default, the dir will be set as /tmp/atac
+      dir = '~/Documents/projects/',
     })
   end,
 }

lua/custom/plugins/marks.lua

@@ -1,5 +1,10 @@
 return {
   'chentoast/marks.nvim',
+  keys = {
+    { 'm', mode = 'n' },
+    { "'", mode = 'n' },
+    { '`', mode = 'n' },
+  },
   opts = {
     default_mappings = true,
     default_view = 'vertical',