add theme variables for more-info controls border-radius and width

[Mariusthvdb]

Describe the enhancement

in the more-infos, I would love to have the same look and feel as in my main dashboard, that is squared

thanksfully as of late we can use the ha-card-feature-border-radius which is used in eg all Tile features. I have been able do delete many many individual card_mods on those tiles

This is a request to also introduce a likewise variable for the more-info controls

Use cases

sync the look and feel of main dashboard view, and its more-infos in a single variable, and not have to create many individual card_mods for all of the different controls around (showing but a few below)

Visual examples

hope to get:

current:

Anything else?

Id also love to set the width, as the controls have gotten a lot wider than some time ago, so if that could be an additional variable, that would be great

[Mariusthvdb]

width also requires changing position (centering the control), because simply setting the width in console has this effect: