[TASK] Testing Framework Extraction - Next Steps

- Removal of the CMS part from the namespace
- Distinguish Classes / Resources

For background information see

https://decisions.typo3.org/t/testing-framework-extraction-next-steps/50

Change-Id: I3f73baeb16bbef82c9626add063c9edde41b47a6
Resolves: #79518
Releases: master
Reviewed-on: https://review.typo3.org/51449


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>