[TASK] Deprecate GIFbuilder-related methods in ContentObjectRenderer

The following methods within ContentObjectRenderer (cObj) have been marked
as deprecated as all logic related to that have been moved to GifBuilder.

* clearTSProperties()
* gifBuilderTextBox()
* linebreaks()

Resolves: #80532
Releases: master
Change-Id: I064b0b22c944894ec358d95d50a4be72969a7567
Reviewed-on: https://review.typo3.org/52223


Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: Frank Naegler <frank.naegler@typo3.org>