[!!!][FEATURE] Added deleted field for scheduler task

Add a deleted flag to database table "tx_scheduler_task".
Any task execution will also consider this field.

Resolves: #79777
Releases: master
Change-Id: I9f96ae9b255042ebf4ba3c812726cbf5ba4fa41c
Reviewed-on: https://review.typo3.org/51656


Reviewed-by: Jigal van Hemert <jigal.van.hemert@typo3.org>
Tested-by: Jigal van Hemert <jigal.van.hemert@typo3.org>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Markus Sommer <markus.sommer@typo3.org>
Tested-by: Markus Sommer <markus.sommer@typo3.org>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>