fix for getting config settings from plugin table

lua/core/utils.lua

@@ -303,6 +303,9 @@ end
 -- append user plugins to default plugins
 M.add_user_plugins = function(plugins)
    local user_Plugins = require("core.utils").load_config().plugins.install or {}
+   if type(user_Plugins) == "string"
+      then user_Plugins=require(user_Plugins)
+   end
    if not vim.tbl_isempty(user_Plugins) then
       for _, v in pairs(user_Plugins) do
          plugins[v[1]] = v