feat(vimtex): add shell escape option for latexmk

lua/custom/plugins/init.lua

@@ -88,6 +88,11 @@ return {
     init = function()
       -- VimTeX configuration goes here, e.g.
       vim.g.vimtex_view_method = 'zathura'
+      vim.g.vimtex_compiler_latexmk = {
+        options = {
+          '-shell-escape',
+        },
+      }
     end,
   },
 }