Add an edit button to embed blocks

[notnownikki]

Description

Adds an edit button to the embed blocks, so you can change the URL.

How has this been tested?

Embed some content, click the edit button, change the URL, embed again.

Types of changes

New feature

Checklist:

• My code is tested.
• My code follows the WordPress code style.
• My code follows the accessibility standards.
• My code has proper inline documentation.

[notnownikki]

Rebased to pick up the alignment toolbar changes

[gziolo]

Code wise it looks good. However, there is some visual issue which needs to be fixed before we proceed:

Browser: Chrome, macOS.

[gziolo]

Code wise it looks good. However, there are some visual issues which need to be fixed before we proceed:

Browser: Chrome, macOS.

[notnownikki]

I wonder if this is an issue with mixing supports and BlockControls in the same block. I'll take a look!

[notnownikki]

Wrapped the edit control in Toolbar, seems to fix it. Perhaps I missed something in a past change, I'm sure this used to happen automatically...

[gziolo]

Thanks for fixing, all good after your change. 🚢

[mtias]

Nice small improvement, thanks!