Add option to generate pure HTML/CSS/JS website.

[otabekoff]

Is your feature request related to a problem? Please describe.

I was going to make a documentation application using VitePress. So, I've made my website and then build it to get final files in the dist folder. Then, I tried to load that page as WebView in Flutter. But only HTML content is being displayed. No CSS is working. And also media files are not displaying. I think JS files are also not being loaded. This is happening when I open website with browser. It is only working with local server/host or web servers.

Describe the solution you'd like

Add option for generating final code files like general websites that are openable by browser too.

Describe alternatives you've considered

1. I've tried to build as MPA(Multi Page Application). But didn't work.
2. I've changed the paths of images and CSS files from /file-path/file-name.extension to ./file-path/file-name.extension and it worked.

Additional context

No response

Validations

• [X] Follow our Code of Conduct
• [X] Read the docs.
• [X] Read the Contributing Guidelines.
• [X] Check that there isn't already an issue that asks for the same feature to avoid creating a duplicate.

[brc-dd]

You can use some flutter plugin like this instead: https://inappwebview.dev/docs/in-app-localhost-server/

x-ref: https://stackoverflow.com/a/61981071/11613622

We don't plan to support relative base in near future. It would need a lot of refactoring.