[Feature Request] Allow defaultLayout accept a function

[ModyQyW]

Background

Sometimes we may need to setup different layouts. Indeed this plugin provides a way to set route layout (with meta.layout in route block). However, we have to update files one by one in this way. It costs lots of time and energy to do so.

Expection

I am hoping that we make defaultLayout accept a function or a string, which the function can return a string by passed route. It looks like below:

import Vue from '@vitejs/plugin-vue';
import Pages from 'vite-plugin-pages';
import Layouts from 'vite-plugin-vue-layouts';

export default {
  plugins: [
    Vue(),
    Pages(),
    Layouts({
      defaultLayout: (route) => { ... }, // return a string, like 'default' or 'myLayout'
    }),
  ],
};

I would like to listen to your thoughts.

Additon

I will be glad to submit a PR if you think this is valuable.I have no idea how to do this. Sorry.