[FEATURE] Registry for adding file rendering classes

To be able to render all kinds of media files a file renderingRegistry
is needed where you can register a "renderer" class that can generate
the needed HTML output.

This patch adds a registry for adding renderer classes and
a AudioTagRenderer + VideoTagRenderer class.

Resolves: #61800
Releases: master
Change-Id: Ied5e16f00e10ac0c78a6508ef42fe585558a2d2c
Reviewed-on: http://review.typo3.org/32925
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Markus Klein <klein.t3@reelworx.at>
Tested-by: Markus Klein <klein.t3@reelworx.at>