Responsive menu label

[jffng]

It would be helpful if the responsive menu had the option to display a label on its open and close buttons, for example:

I think this is a fairly common pattern, and maybe increases the accessibility of the responsive menu.

Sorry if this is already in an issue somewhere! I couldn't find a specific discussion after searching for a bit.

What is your proposed solution?

It's simple to achieve this by styling a pseudo-element on the existing button provided by the navigation block, but this does not allow us to translate the label without doing something messy. I think having an option in the navigation block's responsive settings to set and display the label would be great.

[mtias]

I think we discussed allowing a button (with customizable text) or the icon, but not a mix. cc @jasmussen