docs: add vite-vue3-ts-element-sass-template

[ATQQ]

Please make sure all the requirements are satisfied, otherwise the PR could be closed without further notice.

Checklist

• [x] Title as described.
• [x] Make sure you put things in the right category.
• [x] The description of your item should be a sentence with less than 24 words.
• [x] Omit unnecessary words already provided in the context (e.g. for Vite, a Vite plugin).
• [x] Always add your items to the end of a list.

Plugins/Tools

• [ ] The plugin/tool is working with Vite 2.0 and onward.
• [ ] The project is Open Source.
• [ ] The project follows the Vite Plugins Conventions.
• [ ] The repo should be at least 30 days old.
• [ ] The documentation is in English.
• [ ] The project is active and maintained.
• [ ] The project accepts contributions.
• [ ] Not a commercial product.

Starter Templates

• [x] The starter template is working with Vite 2.0 and onward.
• [x] The documentation is in English.
• [x] The starter template most provide enough instructions / documentation about how to start up and what's is included.
• [x] A screenshot or a live demo should be included.
• [x] The repo should be at least 30 days old.
• [x] Should be differentiable from the existing starter templates.

Apps/Websites

• [ ] The website is available without errors and load in a reasonable amount of time.
• [ ] The website must be Open Source and showing it's using Vite intensively.
• [ ] The website is original and not too simple. For that reason, blogs and simple landing pages are rejected.

[antfu]

Could you enrich a bit more for your project's README?

[ATQQ]

no problem, wait a moment