Mail-App Editor: Add Tables

Is your feature request related to a problem? Please describe.

Hello @ChristophWurst,
i've seen you added the function to add an image in the mail-app editor.
I appreciate your effort amd would like to ask if it is possible to also add tables to the editor and a way to hide the table borders?
My company as many others uses html signatures and i would like to try to rebuild the html signature in the mail-app from nextcloud. Your new function to add an image helps alot but we also do have text next to the image and i think the easiest way is to solve this problem is to have a table with hidden borders and two collumns. On one site the picture and the other site with text.

I like to hear what you think about that.

Thanks alot.

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Additional context

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Start by locating the mail-app editor and its existing image-insertion functionality, then determine how table insertion and border visibility fit into that editor. Done means users can create two-column tables and hide their borders for HTML signatures, with the behavior verified in the editor.