[!!!][TASK] Automatically create DB fields

[derhansen]

• Remove affected fields from ext_tables.sql
• Add breaking RST, so users know that DB Schema must be updated on update

See: https://docs.typo3.org/c/typo3/cms-core/main/en-us/Changelog/13.0/Feature-101553-Auto-createDBFieldsFromTCAColumns.html

[derhansen]

This task will be postponed, because it is currently hard to overview, which required field changes will vanish, because TYPO3 core currently has a bug, which shows all CHAR fields as required for change.

As an analysis, passtrhough fields must be taken care of manually. Also KEY indexes must be created manually.

Therefore, only #1240 has been applied.