[BUGFIX] Create missing files/folders for ExtensionCompatibilityTester

* Create path to errorProtocolFile if it doesn't exist yet
* Create empty errorProtocolFile to avoid 404 errors

Resolves: #80547
Releases: master,8.7
Change-Id: I302909189d7ff4600325c91e525d9924810c4c5c
Reviewed-on: https://review.typo3.org/53217


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Mathias Schreiber <mathias.schreiber@typo3.com>
Tested-by: Mathias Schreiber <mathias.schreiber@typo3.com>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>