[FEATURE] Add additional parameters to email links

It is now possible to define additional
fields (subject, cc, bcc, body) to links to emails
by default.

This means, that in the link picker of the
TYPO3 Backend, emails can now be filled
with additional fields, and the TYPO3
Frontend renders the mailto link properly
encoded.

The <f:link.email> Fluid ViewHelper now
also accepts the new properties:
 * subject
 * cc
 * bcc
 * body

This change also fixes some problems with
existing links with percent-encoded parameters (RFC 3986)
(see tests).

Resolves: #70276
Resolves: #84594
Releases: main
Change-Id: Iaf0366927feb79c9bfa0319556569236409858fd
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/77514


Tested-by: Guido Schmechel <guido.schmechel@brandung.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Guido Schmechel <guido.schmechel@brandung.de>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: core-ci <typo3@b13.com>