TYPO3 extension form_legacy

Adds the legacy form extension from TYPO3 CMS 7 LTS to TYPO3 CMS 8 LTS.

The functionality was part of TYPO3, until TYPO3 CMS 7 LTS, and moved into its own extension, receiving its own public repository.

The new Form extension delivered with TYPO3 CMS 8 LTS substitutes this extension and form_legacy is available to achieve backwards compatibility when upgrading instances from core version 7 to 8.

	URL
Repository:	https://github.com/FriendsOfTYPO3/form_legacy
Read online:	https://docs.typo3.org/p/friendsoftypo3/form-legacy/main/en-us/
TER:	https://extensions.typo3.org/extension/form_legacy