[FEATURE] Add FAL examples

Add example of fields using FAL, both with group-type and
inline-type fields.

Resolves: #54552
Releases: 0.6
Change-Id: Ia48e0685eab964b59ce8bff567d0118207481e57
Reviewed-on: https://review.typo3.org/28103
Reviewed-by: Francois Suter
Tested-by: Francois Suter