[TASK] Move image-related code from cObj to IMAGE

The methods within ContentObjectRenderer are only needed for
rendering an IMAGE <img> tag and are moved to the right place in order
to make cObj less fat:
- cImage()
- getBorderAttr()
- getImageTagTemplate()
- getImageSourceCollection()
- linkWrap()
- getAltParam()

"imageLinkWrap()" is marked as internal for the time being, in order to refactor
this code in TYPO3 v11.

Resolves: #90861
Releases: master
Change-Id: I4c11a5b3df393dbe63ad7401869d0faaa61b2418
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/63949


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>