[Feature Request] Turn the Builder Canvas into a text editor on text files

[iocouto]

When the user needs to edit the contents of a .txt, .md, .json or other text file, right now we have to go through several clicks to get to a tiny 'content' text box in the page's 'Settings'. The area for 'editing content' in Webstudio is the Canvas though, so it makes more sense to make the entire canvas a 'raw text editor' when the currently selected page is a 'text' page. Having the default Canvas show up for a page of type 'text' is not helpful, and can even be confusing for newbies...

[kof]

Something related we discussed, but not the same: #5824

In your case I think we should just have a similar component to the one we use for custom code in project settings with expand icon that lets you go into a dialog and full screen:

[iocouto]

The 'custom code' component is ideal, because indeed the user is likely to want to add dynamic data — eg., from a CMS — via a data variable.