Add HTML Rendering

[mmjsmohit]

This PR aims to solve #155
I have used flutter_widget_from_html which convert html into flutter widgets so that they can be previewed in the preview pane.

[animator]

Expected Response:

This PR:

[mmjsmohit]

Hi @animator! The goal of this PR was to add HTML rendering, however it looks like I need to simply add a webview. Should I go ahead with that?

[animator]

I had already shared more details with you on discord, in case you missed it.

WebView is a solution you can explore.

[monstajoe2002]

Can I work on this issue please?

[animator]

Sure @monstajoe2002

[monstajoe2002]

I had already shared more details with you on discord, in case you missed it.

WebView is a solution you can explore.

Unfortunately, that's not possible with desktop apps in Flutter since the WebView feature is mobile only. Even then, desktop implementations don't work 100% especially when we don't have access to the request url from its repective widget.

[monstajoe2002]

Hey guys! I created a pull request for this feature here: #243