Embed blocks: Need resize handles

[neobabis]

Enhancement request

I think that is necessary to have the ability to decrease/increase the size of an embed block (e.g. Facebook block) like the Image block.

[mapk]

Thanks for this suggestion, @neobabis! We talked it through in today's Editor chat in slack.

Looks like we can push this forward with a single width handle for resizing. We'll need to maintain the aspect ratio of the video as we do for images. props to @jasmussen @notnownikki

@karmatosed brought up that we should also test this with a variety of themes.

[neobabis]

A problem (just a simple example):

Full width page > Facebook video - portrait orientation
You have only one solution: You should add css class to decrease the size. And of course one class per size.

On the other hand, for an image block we don't need css classes for different sizes because we have the "resizing ability".

[annezazu]

As part of the FSE Outreach Program's third call for testing, this came up as a pain point. Currently, there's no way to resize what's shown and the experience breaks the WYSIWYG experience of site building as a result. Here's what one sees in the back end vs front end:

Backend:

Frontend: