[TASK] Release EXT:styleguide from EM dependency

EXT:styleguide uses two images from
EXT:extensionmanager in the "Cards" examples.

To loosen the dependency, the example images are
copied over to EXT:styleguide.

Resolves: #102946
Releases: main
Change-Id: I9eff6b9ef009b0d1059b788fa2ad730f148b37e2
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/82662


Tested-by: Simon Schaufelberger <simonschaufi+typo3@gmail.com>
Reviewed-by: Andreas Kienast <a.fernandez@scripting-base.de>
Reviewed-by: Simon Schaufelberger <simonschaufi+typo3@gmail.com>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Andreas Kienast <a.fernandez@scripting-base.de>