[TASK] Use ModuleTemplate API for ext:impexp

Change-Id: I58f167c9e80884715f5eaeb9163dc2e0bea95cc6
Releases: master
Resolves: #69880
Reviewed-on: https://review.typo3.org/43854


Reviewed-by: Frank Nägler <frank.naegler@typo3.org>
Tested-by: Frank Nägler <frank.naegler@typo3.org>
Reviewed-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Tested-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Reviewed-by: Frans Saris <franssaris@gmail.com>
Tested-by: Frans Saris <franssaris@gmail.com>