Feature: #45725 - Added recursive option to folder based file collections

Description

Folder based file collections have now an option to fetch all files recursively for the given folder. The option is also available in the TypoScript Object FILES.

Usage:

filecollection = FILES
filecollection {
	folders = 1:images/
	folders.recursive = 1

	renderObj = IMAGE
	renderObj {
		file.import.data = file:current:uid
	}
}