[TASK] Add update wizard to migrate <link> tags to <a> tags

Since the RteHtmlParser now stores updated content as <a>
tags instead of <link> tags an update wizard is provided
to convert links in all records that have input fields, textarea fields
or flexforms.

Resolves: #79305
Releases: master
Change-Id: I3f52445d7fd82a999f3cff236b37649c77449d5c
Reviewed-on: https://review.typo3.org/51276


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: Frank Naegler <frank.naegler@typo3.org>
Reviewed-by: Jigal van Hemert <jigal.van.hemert@typo3.org>
Tested-by: Jigal van Hemert <jigal.van.hemert@typo3.org>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>